The New York City police officer who shot an unarmed man in a dark public housing stairwell says what happened was a deadly accident.

Prosecutors call it manslaughter and say he acted recklessly and then did little to help the dying man.

Jurors are expected to evaluate Officer Peter Liang’s actions as soon as Tuesday.

Closing arguments are expected to be delivered this morning and deliberations will most likely begin in the afternoon.

The 28-year-old rookie police officer says he didn’t know anyone was in the pitch-black stairway when he unintentionally fired. The single shot ricocheted off a wall, striking Akai Gurley, 28, who was walking down the stairs.

Read more at JET.