A New York City office building where a gunman killed four people then himself has reopened a week after the deadly shootings. On Monday, workers trickled back into 345 Park Avenue in Midtown Manhattan, a skyscraper home to high-profile tenants including the NFL and asset management firm Blackstone.

Blackstone gave employees the option to return to the office or work remotely. However, the National Football League (NFL) asked employees to continue to work from home at least through the end of this week.