A man carrying a high-powered rifle shot and killed four people, including an off-duty police officer working security in Midtown Manhattan, sources told ABC News.

A New York City police officer killed during a shooting at a Manhattan office tower is being laid to rest. NEW YORK (AP) — A New York City police officer who was among the four people shot and killed by a gunman during a rampage at a Manhattan office tower will be laid to rest Thursday.

Police Officer Didarul Islam, a father of two with a baby on the way, was one of the four people killed by Shane Tamura inside 345 Park Ave. on Monday.