Members of the New York Police Department paid tribute to Officer Didarul Islam, one of the people killed in Monday's Manhattan shooting. Islam, 36, died Monday when a gunman opened fire inside a New York City office building.

The funeral will be held Thursday for the police officer who was one of four people killed in Monday's mass shooting at a Midtown Manhattan office building.

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, and wounding a fifth before taking his own life, officials said.