Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday. The injured victim was an employee at the NFL, according to NFL Commissioner Roger Goodell. Here's what we know about the four people killed:

Blackstone, a global investment firm, mourned the victims in its own statement, in which it remembered LePatner as a "brilliant, passionate, warm, generous, and deeply respected" member of its firm "and beyond" who "embodied the best of Blackstone."

"We cannot properly express the grief we feel upon the sudden and tragic loss of Wesley," the LePatner family told Fortune, adding she was a "driven and extraordinarily talented professional and colleague.