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:

Global investment firm Blackstone is reopening its doors on Monday, one week after a gunman shot and killed one of its executives and three others, reports said. PIX11’s Justin Finch has the story.

The lobby of 345 Park Avenue will reopen for the first time since last Monday's mass shooting that left four innocent victims dead.