Luigi Mangione has pleaded guilty. What happens to his other trial?
Getty ImagesLuigi Mangione has admitted killing UnitedHealthcare boss Brian Thompson, pleading guilty to two federal charges related to the fatal shooting in 2024.
Mangione, 28, now faces up to a lifetime in prison when he is sentenced in December.
He also faces a slew of separate charges, including second degree murder, in a state trial beginning next month.
His admission today may throw a wrench in the state trial, as Mangione's lawyers argue he cannot be prosecuted twice for the same crime.
What did he plead guilty to?
Mangione pleaded guilty to two federal charges of stalking resulting in death on Friday.
"I shot Mr Thompson in Manhattan and he died," Mangione told a Manhattan courtroom, changing his initial plea of not guilty.
Federal prosecutors said the 28-year-old travelled across state lines and used surveillance to kill the healthcare boss.
The charges carry a maximum penalty of life in prison without parole.
Mangione has not made a plea deal with the prosecution, as US media previously reported was a possibility.
Plea deals, which do not exist in the UK, often include an exchange where the defendant gets a lighter sentence, or charges are dropped in exchange for a guilty plea.
Prosecutors have recommended Mangione serve between 24 and 30 years in prison. But that is not binding and Judge Margaret Garnett said in court that she ultimately decides his sentence. The maximum sentence is life in prison and there is no parole in the federal system.
Will his plea impact the upcoming state murder trial?
Mangione faced two separate criminal prosecutions: a federal case and another in New York state that is scheduled to start on 8 September.
Though he pleaded guilty in federal court, he still faces eight state charges, including second degree murder, all of which he has pleaded not guilty.
Since his statements in federal court can be used in the upcoming state trial, his defence options are limited.
"In essence, his statements that he followed and shot Mr Thomson are effectively a confession to the crimes in state court too," said Mark Chutkow, a defence attorney and former federal prosecutor.
Chutkow said Mangione's attorneys could still decide to argue that he was experiencing an extreme emotional disturbance at the time of the shooting, but his statement on Friday about the planning that went into the crime would likely undermine such claims.
Mangione's lawyers are pushing to get the state case dismissed entirely.
They argued outside federal court on Friday thatbecause he already pleaded guilty to federal charges, the state case runs afoul of so-called "double jeopardy" protections.
What is double jeopardy?
Double jeopardy is a constitutional protection that prevents an individual from being prosecuted twice for the same crime.
But it considers the state government and the federal government to be separate sovereigns, allowing each to charge someone for the same criminal conduct.
Also, New York state has its own double jeopardy protection that's stronger than the US Constitution.
It mandates that a person cannot be prosecuted twice for the same offence or for separate offences related to the same criminal act, even if one is state and one is federal.
Mangione's defence team has already filed a motion explaining why the state charges should be dropped over double jeopardy concerns.
The motion asks the court to dismiss nearly all counts related to the killing of Brian Thompson, including second degree murder. The only remaining charge would be for the possession of an allegedly fraudulent identification card.
Mangione's lawyers allege that the New York County District Attorney's Office and the US Department of Justice "cut a deal" to manoeuvre around the technicalities of double jeopardy protections and give the defendant the harshest possible punishment.
With this attempt to get the state charges thrown out, Mangione is "clearly putting all his eggs in the double jeopardy basket," said Chutkow.
Anna Cominsky, professor at New York Law School, said the plea in the federal case "significantly complicates the state's ability to proceed" and until it is resolved, the jury selection cannot start.
"Given Mangione's allocution in federal court today, addressing the very elements of the offence he is charged with in the state prosecution, the defence has a very compelling argument that double jeopardy applies," she said, adding that the guilty plea also could be used in a state trial.
What is Mangione charged with at state level?
Mangione currently faces eight total felony charges in New York state court:
- second degree murder
- possession of a forged instrument (for alleged fake driver's license)
- six counts of criminal possession of a weapon.
He has previously denied all these charges.
The 28-year-old was originally charged with three additional counts which have since been dropped by a judge: first degree murder in furtherance of terrorism, second degree murder as an act of terrorism, and criminal possession of a weapon.
If convicted, Mangione faces 25 years up to life in prison for the state charges.
Was Mangione facing the death penalty?
The US government initially charged Mangione with four crimes.
It included one count of using a firearm to commit murder, which carries a maximum penalty of death.
But in January a federal judge dismissed that charge, ending the possibility of the death penalty.
Judge Margaret Garnett also dismissed one federal count related to discharging a weapon with a silencer, leaving just two federal charges remaining, both related to interstate stalking.
None of the state charges against Mangione can carry the death penalty because New York state declared capital punishment unconstitutional in 2004.
