NEW YORK — A spokesperson for the Manhattan District attorney said Thursday that Daniel Penny, the commuter who put Jordan Neely in a fatal chokehold on the subway last week, will be arrested on second-degree manslaughter charges.

The 24-year-old former Marine is expected to be arraigned in Manhattan Criminal Court Friday in a case that has sparked local and national outrage including from New York officials who’ve called Penny a vigilante.

“We can confirm that Daniel Penny will be arrested on a charge of manslaughter in the second degree,” said a spokesperson for Manhattan DA Alvin Bragg. “We cannot provide any additional information until he has been arraigned in Manhattan Criminal Court, which we expect to take place tomorrow.”

Lawyers for Penny have said he acted in self-defense.