There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on the 33rd floor, police said.

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, and wounding a fifth before taking his own life, officials said.

Thousands of familly, friends and colleagues are expected to gather to mourn the NYPD officer killed in this week’s Manhattan office attack at a funeral on Thursday, a day after another grieving family laid their loved one to rest,