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.

The 36-year-old, one of four who died in a Midtown Manhattan mass shooting, left behind a pregnant wife and two young boys.

Police have lined up four rows deep to pay respects to a fellow officer who was among the victims of a gunman's rampage at a Manhattan office tower. New York's mayor and governor extolled Officer Didarul Islam as they and others mourned him at a service Thursday at a Bronx mosque.