A trial has begun in the case of a former US Marine who is accused of putting a homeless man in a fatal chokehold on a New York subway train. Daniel Penny, 25, has pleaded not guilty to charges of second-degree manslaughter and negligent homicide.

Jury selection was expected to begin Monday in the manslaughter case of Daniel Penny, who put Jordan Neely in a chokehold on a New York City subway last year leading to Neely's death.

Jury selection has begun in the criminal trial of the U.S. Marine Corps veteran who placed a man in a deadly chokehold aboard a New York City subway train last year.