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,

The New York police officer killed in a mass shooting in a Manhattan skyscraper on Monday was an immigrant who left behind a pregnant wife, two young sons and distraught parents, while friends and officials in Bangladesh and the United States described him as a hero.

The New York police officer killed in a mass shooting in a Manhattan skyscraper on Monday was described by the city's mayor and police commissioner as a heroic Bangladeshi immigrant who saved lives while "putting his life on the line.