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.