Four people were killed and a fifth seriously wounded in a shooting Monday at a Midtown Manhattan office tower. A New York City police officer is among the victims.

Law enforcement received a call reporting shots fired at around 6:28 p.m., New York City Police Commissioner Jessica Tisch said at a press conference.

“The building security camera footage shows the shooter enter the lobby, turn right and immediately open fire on an NYPD officer,” Tisch told reporters.“He then shoots a woman who took cover behind a pillar and proceeds through the lobby spraying it with gunfire.”

Here's what else to know about the shooting at 345 Park Ave.

Who was the shooter?

Shane Tamura was identified by law enforcement as the gunman.........

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