←  People v. Mangione

N.Y. Sup. Ct., New York Cty., Part 32 · Ind. No. 75657‑24  ·  S.D.N.Y. · No. 1:25‑cr‑00176

People v. Mangione

TLDR Case Flow

Where it standsWaiting on the third question. Both sides have filed, and the court has not ruled on the motion.

  1. The federal conviction

    The first question

    Is there a previous prosecution?

    Yes for murder, since Aug 14, 2026

    Double jeopardy is the rule that you can’t be prosecuted twice for the same thing, and New York has its own version written into state law. That law only does anything once there’s an earlier prosecution that has actually ended in something, like a conviction. So the first question is if there is one.

    He was charged over the same killing in more than one court. Two of them matter here, the federal government’s case and the State of New York’s. This card starts with the federal case, and it’s finished. On August 14, 2026, he pleaded guilty in federal court to two counts of stalking, each one for stalking that ended in a death. A count is one charged offense.

    A guilty plea is a conviction, the same as if a jury had found him guilty, and that conviction is what everything below hangs on. He is due to be sentenced on December 18, 2026, and each count carries up to life in prison.

    The defense tried the double jeopardy argument in May 2025 and lost, because back then the federal case was still going and nothing had ended. The guilty plea on August 14, 2026, changed that. A guilty plea is a conviction, so now there is an earlier prosecution, and the answer is yes.

    That yes is for the murder count. For the seven weapons counts, the prosecution says no. The federal case had two gun charges of its own, but the federal judge threw them out in January 2026, at the defense’s request, so by the time he pleaded guilty he wasn’t charged with them anymore. The defense says that doesn’t matter, because the case they were part of still ended in a guilty plea. The judge hasn’t decided that one either.

    If yes

  2. New York’s counts three through ten

    The second question

    Was it the same act, or the same criminal transaction?

    Not in dispute

    This card starts with the New York case, and it’s the one in question. The indictment, which is the document that lists the charges, started out with eleven counts. A judge threw out the first two, the terrorism ones, in September 2025. Counts three through ten are what’s left from the day of the shooting. That’s one count of second-degree murder and seven weapons counts.

    Every one of them is dated on or about December 4, 2024, the same morning the federal case was about. That shared date is why the defense has asked the court to dismiss all eight.

    The second question is if both cases are about the same thing. Under the US Constitution this wouldn’t even be asked. The federal government and a state count as two separate governments, or sovereigns, and the Constitution lets each one prosecute the same conduct. New York’s own law is stricter. It counts a federal prosecution too, as long as both cases come out of the same act or the same criminal transaction, which basically means one connected episode.

    That stricter state law is the only reason this fight exists. And the answer here isn’t really in dispute. Both cases are about one defendant, one victim, one street and one morning.

    If yes

  3. The case is here

    The third question

    Does an exception in CPL 40.20(2) apply?

    The main dispute

    CPL 40.20 is the section of New York’s Criminal Procedure Law that holds the double jeopardy rule, and part (2) of it comes with a list of exceptions. If one of them applies, the second prosecution is allowed even though the first two questions were both a yes. So this is where the prosecution gets its chance to keep the case, and it’s the main question being fought over.

    The exception that matters here has two parts, shown in the two cards inside this one, and the prosecution needs both of them. This is where the case is sitting right now. The judge hasn’t ruled on it.

    Both are needed

    The first part of the exception

    Does each offense contain an element the other lacks?

    Agreed by both sides

    This is the first part of the exception. An element is one of the things a prosecutor has to prove for a particular crime. This part asks if each of the two crimes needs something proven that the other one doesn’t, and it has to work in both directions.

    Second-degree murder needs proof that he meant to cause a death, and federal stalking plainly has no such requirement. The defense agreed in its motion that this part is met, so it isn’t where the fight is. The fight is in the other part.

    and

    The second part of the exception

    Are the two statutes designed to prevent very different kinds of harm?

    Undecided

    This is the second part, and it’s where the real fight is. It isn’t enough for the two crimes to be built differently on paper. The two laws also have to be aimed at very different kinds of harm. So the prosecution has to show that the federal stalking law and New York’s murder law exist to protect against different things, even though in this case both were charged over the same death.

    There’s a twist in it too. The strongest support for the prosecution’s side comes from the federal case itself, where the judge ruled in January 2026 that stalking isn’t a crime of violence. That was a ruling the defense asked for, and it’s what took the death penalty off the table.

    If yes

    Outcome

    The state case survives

    Then

    Tried on counts three through ten

    If the judge finds the exception applies, double jeopardy doesn’t block the New York case and it goes ahead. He would be tried in front of a jury on the murder count and the seven weapons counts, even though he has already pleaded guilty in federal court over the same morning.

    There’s no date for that trial right now. It was supposed to start on September 8, 2026, but that date came and went while this motion was waiting to be decided, and no new one has been set.

    If no

    Outcome

    The state case is over

    Then

    Counts three through ten dismissed

    If no exception applies, New York’s double jeopardy law stops the state from prosecuting him over that morning a second time. The murder count is dismissed and all seven weapons counts go with it.

    That wouldn’t mean nothing happens to him. He would still be sentenced in the federal case in December, where each of the two counts he pleaded guilty to carries up to life. It would mean New York never puts him on trial for the killing at all.

    Either way

  4. Outside the motion, either way

    Count eleven survives both branches

    There’s one charge this whole fight doesn’t touch. Count eleven is for having a forged New Jersey driver’s license, and the indictment dates it to November 24, 2024, which is ten days before the killing. A different day and a different act means it isn’t part of the same criminal transaction the federal case covered, so double jeopardy has nothing to say about it. The defense didn’t even ask for it to be dismissed.

    So whichever way the judge rules above, this one count stays. If the defense wins everything it asked for, a fake driver’s license is all that would be left of the New York case.

The Fifth Amendment is not on this diagram, and that is the point of it. The constitutional claim does not branch — under dual sovereignty it simply fails, because two sovereigns prosecuting the same conduct are not prosecuting the same offense. Everything here runs on a New York statute that chose to be broader than the Constitution. And note what the third question asks of the People: that federal stalking and intentional murder be aimed at very different kinds of harm. The strongest authority for that proposition is the January ruling that stalking is not a crime of violence — the ruling that took the death penalty off the table.

Back to the case

Notes

How this was made, and what it leaves out

Source

The federal case is built from its own docket, No. 1:25‑cr‑00176 (MMG), read in full through the archive of PACER filings. Every federal citation on this page is an ECF No. and can be pulled from that docket. The two January opinions are quoted from the filed text.

The state indictment is quoted from the signed copy published by the District Attorney’s office, and the August 17 scheduling order from the copy filed in Part 32 — both in full, both short. The People’s October 9 response is quoted from the copy Courthouse News published.

The two state decisions that matter most — the September 2025 omnibus decision and the May 2026 suppression decision — are summarized here from contemporaneous reporting of them, with one quoted passage from the first. That is a weaker chain than the rest of the page and is marked as such below.

What is not here yet

The People answered the double jeopardy motion on October 9, 2026, and the defense replied at the end of the month. The Side by Side View sets the two side by side, each quoted from its own papers. The defense reply is quoted from the court-stamped copy LA Magazine published.

New York County Supreme Court has no public docket of the kind PACER provides, so the state record here is not a complete list of filings in the way the federal one is. Where a state filing is described, it is because a copy or a reliable account of it is public — not because the docket was read end to end. Assume the state side is less complete than the federal side, because it is.

The Pennsylvania case is noted once and then dropped. It has never been tried and nothing in it bears on the question this page is about.

The victim, and the inference

Brian Thompson was fifty, and had a wife and two sons. The case is interesting for reasons of statutory construction, and a page organized around statutory construction can quietly turn a killing into a puzzle. He is named here every time the record names him, and the one thing nobody in any of these courtrooms has disputed since August 14, 2026, is how he died.

One reading on this page is an inference rather than a fact: that the open plea was entered to trigger the state double jeopardy bar. Neither side has said so on the record. It is marked as an inference where it appears, and it is the only place this page reasons about motive.

What this is not

Not legal advice, not a finding, and not a verdict. He has been convicted of two federal stalking offenses by his own plea and has not been tried for murder by anybody. The state counts are allegations and remain allegations, and the question of whether they can be tried at all is undecided by the only person who gets to decide it. Where the record does not reach, this page says so and stops.

Tell me what I got wrong

If something here is missed, misrepresented or unfairly portrayed, let me know. Point me at a filing or record and I will verify it on my end. I actively look to correct, improve and remain unbiased.

Type of issue

No account, no name, no email. The submission stores what you typed, your address and your browser string, to make abuse traceable and for nothing else.

Record reviewed through November 8, 2026. Both cases are live: the federal one awaits sentence on December 18, and the state one awaits a decision on a motion both sides have now briefed. This page will be wrong in some particular within weeks, which is the condition of writing about a case while it is still happening.

Terms

Plain English

Words this page uses because the courts use them. Nothing here is special to this case.

The paperwork

Docket
The court’s numbered list of everything filed in a case. Entry 42 is the forty-second thing filed.
ECF No.
How a federal filing is cited: its docket number. A number after a dash, like 59-2, is an attachment to it — usually an exhibit.
Indictment
The document a grand jury returns to start a felony prosecution. It lists the charges and nothing else; it is not evidence of anything.
Count
One charged offense. An indictment with eleven counts charges eleven separate offenses, and a jury answers for each one separately.
Grand jury
A panel that hears the prosecution’s evidence in secret and decides whether there is enough to charge. It does not decide guilt.
Transcript
The word-for-word record of a hearing. Cited by page and line, so 12:7 means page 12, line 7.
Under seal
Filed with the court but kept off the public record. Both sides and the judge can read it; nobody else can.

How a case moves

Arraignment
The hearing where a defendant is formally told the charges and enters a plea to them.
Motion
A formal request that the court do something. The other side files an opposition or response; the moving side may then reply.
Suppression
Keeping evidence out of a trial because of how it was obtained. The evidence may be entirely genuine; the question is only whether the police were entitled to get it that way.
A search of a detained person’s property to log what is in it, done to a standard procedure rather than to look for evidence. Lawful without a warrant, which is why the procedure itself gets litigated.
Miranda warnings
The caution police must give before questioning someone in custody. Answers given before it are generally inadmissible; answers to routine booking or safety questions generally are not affected.
Voir dire
The questioning of prospective jurors before a trial, to decide who sits on it.
Interlocutory appeal
An appeal taken in the middle of a case, before final judgment, usually only where a statute allows it.
Presentence report
An investigation by the probation office, ordered after conviction, that the judge reads before sentencing.
Learned counsel
A lawyer experienced in death penalty cases, appointed at public expense whenever a federal case is capital. Required by statute, not discretionary — so the appointment arriving and being withdrawn marks when a case was and was not capital.
Primary jurisdiction
Which of two governments holding claims on the same defendant gets to deal with him first. It usually follows who arrested him.
Rule 600
Pennsylvania’s speedy-trial rule. It normally requires trial within a year of the complaint, but time a defendant is unavailable does not count against it.

Pleas

Open plea
A guilty plea entered with no agreement from the prosecution — no charge concessions, no sentencing recommendation. The defendant gives up the trial and keeps none of the usual consideration for it.
Plea agreement
The usual arrangement: a plea in exchange for something, normally dropped charges or a position on sentence. There was none here.

The tests in this case

Double jeopardy
The bar on being prosecuted twice for the same offense. New York’s statutory version is broader than the Fifth Amendment’s and reaches across sovereigns.
Dual sovereignty
The doctrine that a state and the federal government are separate sovereigns, so a prosecution by each for the same conduct is not the same offense under the Fifth Amendment.
Criminal transaction
Conduct closely connected enough in time and purpose to count as one episode. New York’s double jeopardy statute works on transactions, not just on single acts — which is why the date on a count matters.
Element
One of the separate things a prosecutor has to prove for a particular crime. If one is missing, the charge fails.
CPL 40.20
The section of New York’s Criminal Procedure Law that holds the state’s double jeopardy rule. Its second part bars a second prosecution over the same act or criminal transaction, and then lists the exceptions.
Crime of violence
For these statutes, a felony that has as an element the use, attempted use, or threatened use of physical force against the person or property of another.
Predicate offense
An offense that another, more serious charge is built on top of. If the predicate fails as a matter of law, the charge built on it fails with it.
Categorical approach
A method that ignores what the defendant actually did and asks only whether the offense, as written, always requires force — judged by the least serious conduct the statute could cover.
Legally insufficient
The evidence put before the grand jury, taken at its best, could not establish an element of the charge. The count goes without any finding about whether the defendant did it.
Armed felony
A New York classification attaching to certain offenses committed with a loaded weapon. It restricts what sentence and what plea are available.