New York City is mourning an NYPD officer and three other people killed in Monday night's shooting inside an office building in Midtown Manhattan. Officer Didarul Islam was in uniform working as a security guard for a private company at the time of the shooting,

New York's mayor says the father of two was doing what he did best and protecting New Yorkers when he was shot dead on Monday evening.

The Bangladeshi immigrant “always wanted to be a cop,” his brother-in-law told the. “He was a hard-working family man.”