The deadly shooting at a New York City high-rise office building Monday night raises new questions for CEOs and businesses as ...

New York City police detectives searched the Las Vegas studio apartment of the suspected gunman in Monday's mass shooting at ...

Four people were killed on Monday when a man, identified by police as Shane Tamura, walked into the lobby of 345 Park Avenue ...

(CNN) — A supervisor at the Las Vegas casino where Shane Devon Tamura worked legally purchased the gun used in the Midtown ...

A gunman who killed four people at a Manhattan office building before killing himself claimed in a note to have a brain ...

An off-duty New York City police officer and an executive at an investment firm were among four people killed by a gunman at a Manhattan office tower. Officer Didarul Islam ...

Investigators say the suspect, armed with an M4-style rifle, may have blamed the league for head trauma he believed caused ...

Officer Didarul Islam was killed Monday along with 3 others when a gunman entered a Manhattan office tower firing a rifle.

Antipsychotic medication and a suicide note to his parents were found in the apartment of the gunman who killed multiple people in a mass shooting in a Manhattan building.