Blackstone told employees on Friday it will reopen its New York headquarters on August 4, a week after shuttering it in the wake of a shooting that killed four people including one of its executives.

Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday.

The shooter, identified as 27-year-old Shane Tamura of Las Vegas, left a suicide note suggesting he had CTE and was targeting the NFL headquarters, officials say.