Didarul Islam, a 36-year-old NYPD officer, was off duty and working a security job when he was fatally shot by a gunman who opened fire at the 345 Park Avenue office building on Monday. Islam, a Bangladeshi immigrant who joined the NYPD four years ago, is survived by his wife, who is eight months pregnant, and two young sons.

NEW YORK (TNND) — A New York City police officer who was among the four killed by a gunman at a Midtown Manhattan office building will be laid to rest on Thursday. Officer Didarul Islam, 36, was shot and killed on Monday in the building that is home to the National Football League's headquarters while working as an off-duty security guard.

The 27-year-old gunman fired indiscriminately throughout the building’s lobby and 33rd floor, killing Islam, security guard Aland Etienne, Blackstone executive Wesley LePatner and Rudin Management associate Julia Hyman, before turning the gun on himself.