The commissioner advised league employees based in New York to work remotely at least until the end of next week

Roger Goodell sent a letter to all NFL employees after the league office was targeted by a gunman in a mass shooting on Monday, July 28.

A note found in the gunman's wallet was critical of the NFL and mentioned CTE. The 27-year-old wrote, “Study my brain please. I’m sorry."

Roger Goodell alerted all NYC NFL employees to work from home at least through next week following the tragic mass shooting that left four dead at the league's headquarters.

The injured NFL employee in the New York City shooting has been identified as Craig Clementi, per reports. Here's the latest on his condition.

The mayor of New York says Shane Devon Tamura may have been targeting the headquarters of the NFL when he opened fire at a skyscraper in midtown Manhattan. A three page suicide note found in Tamura’s wallet and reviewed by NBC News contains several references to the degenerative brain disease CTE,

The gunman suspected of targeting the National Football League headquarters In New York, killing four, was a former standout football player at two Southern California high schools.

The alleged gunman at a shooting rampage in a midtown Manhattan office building was identified as 27-year-old Shane Tamura, of Nevada.