Authorities have revealed that Shane Tamura, the man who shot four people to death at a Midtown Manhattan office building before ending his life last Monday, suffered from a sports-related concussion ...

Crazed gunman Shane Tamura, who shot dead four people at a Midtown Manhattan office building before turning the gun on ...

Rudin employee Julia Hyman was killed on the 33rd floor where Tamura shot and killed himself. A person close to Tamura's ...

U.S. companies are spending record amounts to keep their executives safe in response to rising threats and the killings of ...