Two teams of detectives were sent to Las Vegas to execute a search warrant on the shooter's home and investigate the weapons used in the attack. Investigators discovered that parts of the automatic weapon had been purchased by someone else, raising questions about potential assistance in the crime.

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.

Follow along for live updates on the New York City shooting, where police investigate motive after five people, including the gunman, were killed in the Monday shooting.

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.

NYPD officials are heading to Las Vegas to investigate the gunman who killed four people in a Midtown Manhattan skyscraper.

Five people were shot and four killed by the 27-year-old gunman Shane Tamura, when he opened fire inside an office building at 345 Park Ave. on Monday evening. Among the victims were a Police Officer,

Details are starting to be released on New York City mass shooting suspect Shane Tamura, who played high school football in California.

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