The trial of Daniel Penny, the former Marine charged with killing Jordan Neely aboard a New York City subway, featured testimony from a man who helped the defendant restrain the victim.

The medical examiner who analyzed Jordan Neely’s body after Daniel Penny kept him in a chokehold on an uptown F train last year could not identify any other reasonable explanation for his death besides compression of his neck, she testified during Penny’s Manhattan criminal trial on Friday.

The medical examiner is taking the stand in Daniel Penny's manslaughter trial as the prosecution's final witness. CBS News New York's Doug Williams reports.

Daniel Penny appeared unaware that his chokehold on Jordan Neely had killed the homeless man — and tried to downplay the maneuver hours later, insisting he wasn’t “trying to kill the guy,” it was revealed in court Thursday.

The homicide detective who interviewed Daniel Penny shortly after he placed Jordan Neely in a chokehold on an uptown F train last year knew that Neely had died, he testified at Penny’s criminal trial Thursday. But Penny, he said, did not.

A subway commuter who helped an ex-Marine restrain an agitated man aboard a Manhattan subway last year testified that he tried to convince the veteran to loosen his grip around the man’s neck.

Jordan Neely was killed aboard an NYC subway train in May 2023 by a white marine who calls himself trying to play hero. BOSSIP reported extensively on the incident in which that white man, Daniel Penny, applied a chokehold for so long that Neely eventually stopped breathing and died in front of a train car of commuters.

Done right, the maneuver should knock a person out without killing them, according to a Marines combat instructor who trained Penny. But held too long, the technique can restrict the flow of blood