A vigil for NYPD Det. Didarul Islam, one of the four victims​ killed in the Midtown Manhattan office building shooting, is being held in the Bronx.

Familly, friends and colleagues are preparing to mourn the NYPD officer killed in this week’s Manhattan office attack at a funeral Thursday, less than two days after hundreds stood in salute as his casket received a dignified transfer to the mosque where he’ll be remembered.

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