Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday.

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,

Hundreds gathered Thursday at the funeral of Officer Didarul Islam in the Bronx to pay their respects. (AP video: Joseph Frederick, Production: Vanessa A. Alvarez)