There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on the 33rd floor, police said.

A shooting Monday at an office building in New York City that is home to the Blackstone investment firm and the NFL left four people dead, including an NYPD officer.

Shane Tamura, 27, of Las Vegas, walked into a Manhattan skyscraper on Monday and opened fire, police said. He double-parked a BMW while armed with a rifle and then approached the skyscraper. More than 800 357-Magnum rounds were found in the car,