New York City investigators believe a co-worker of the Las Vegas man who killed four, including a police officer, provided a ...

Investigators are piecing together more details about how a former high school football player who blamed the game for his ...

The gunman in the deadly shooting at a New York City office tower had a background in casino surveillance and once held a ...

The New York City Police Department sent detectives to Las Vegas to work with the Bureau of Alcohol, Tobacco and Firearms to ...

A man exited a double parked BMW with an M4 rifle and then walked toward the skyscraper that is home to the headquarters of ...

New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's ...

Shane Tamura, 27, who fatally shot four people in the building that houses the National Football League's headquarters Monday ...

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada ...

New York City detectives investigating this week's mass shooting were interviewing the attacker's associates in his home ...

Gunman Shane Tamura had a ‘documented mental health history’ and ‘sprayed’ the Manhattan office building lobby with a ...