An NYPD officer, a Blackstone executive, a Rudin Management associate and a security guard were killed in the shooting at Manhattan's 345 Park Avenue.

Wesley LePatner, a top Blackstone executive and advocate for workplace diversity, was among four people killed in a mass shooting at the firm’s Park Avenue office.

Blackstone employees struggled on Tuesday to come to terms with the death of Wesley LePatner, one of the investment firm's senior executives who was gunned down late on Monday as she was leaving her Midtown Manhattan office.