A witness who was inside the Manhattan office building where a gunman with an assault rifle killed four people on Monday has described the harrowing experience to ABC News. She said she was watching a ...

Five people, including a New York City police officer, died in a shooting in Manhattan. Suspected gunman Shane Devon Tamura ...

A gunman fatally shot four people including a New York City police officer before killing himself in midtown Manhattan, authorities said.

Fear and confusion were rampant after a gunman shot and killed four people and wounded another in a Midtown Manhattan office ...

The deadly Park Avenue shooting happened at one of the the most exclusive addresses in Midtown Manhattan — the “Blackstone ...

The suspected NYC shooter was reportedly carrying a note, citing clues about his motive, as he fatally shot four people ...

Mamdani is currently in Uganda celebrating his nuptials at a heavily-guarded private compound in the wealthy Buziga Hill area ...

The gunman, whom police identified as Shane Tamura, 27, of Nevada, was found dead, apparently from a self-inflicted gunshot ...

Shane Tamura shot and killed four people, including NYPD officer Didarul Islam, before turning the gun on himself.

Authorities also found a vehicle with Nevada plates registered to Tamura at the scene, with a rifle case inside, sources said.

The 27-year-old suspected gunman, who recently drove cross-country to New York, had a mental health history, according to officials, who are working to determine a motive.