The Midtown Manhattan office shooter fired 47 rounds from his M4-style rifle during the rampage, a number that indicates the suspect, Shane Tamura, reloaded his rifle at least once, the NYPD said. There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue, police said.

Blackstone, one of the world’s largest investment firms, confirmed one of its employees, Wesley LePatner, was among those killed. A Yale graduate, LePatner was a real estate executive, according to Blackstone’s website, and spent more than a decade at Goldman Sachs before joining the firm in 2014.