New York City is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office building at 345 Park Ave.

Police lined the streets of New York City to pay their respects to fellow officer Didarul Islam, who was among the four victims of a gunman’s rampage Monday at a Manhattan office tower.

NYPD officers stand shoulder to shoulder for Officer Didarul Islam's dignified transfer. He was one of four people who was shot and killed when Shane Tamura opened fire in a New York City office building.