A flatbed truck carried a digital billboard showing photos of Officer Didarul Islam and a commemorative message from his union.

Mourners packed a New York mosque to honor a Bangladesh-born police officer who was killed at an office building this week.

Didarul Islam's casket, draped in the NYPD flag, was carried by officers through the streets of the Bronx to Parkchester Jame Masjid on July 31.