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.

A gunman opened fire inside a Midtown Manhattan skyscraper on Monday, killing four people, including an off-duty NYPD officer, according to authorities. A video showed terrified people running from the office building at 345 Park Ave.

The Bronx community met outside the 47th Precinct to honor the NYPD officer killed in the Midtown mass shooting. CBS News New York's Adi Guajardo reports.