Police believe a man with a long rifle who was seen walking into the building is still inside, according to one source

Didarul Islam, 36, was a father of two, with a third on the way, and was working a second job as a security guard at the building where shots rang out.

Family, friends, and colleagues of slain NYPD officer Didarul Islam gathered at Parkchester Jame Masjid Mosque in the Bronx for his funeral.