During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

The sons of the NYPD officer killed in the Park Avenue mass shooting idolized their dad, showing him off to classmates and ...

More than a decade before he turned a Midtown NYC office building into a killing ground, Shane Tamura stood out as a rising ...

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

The man who shot four people dead with an assault-style rifle inside a Midtown Manhattan skyscraper was carrying a "suicide ...

Members of the New York Police Department paid tribute to Officer Didarul Islam, one of the people killed in Monday's ...

LAS VEGAS -- The gunman who killed four people before taking his own life in a midtown Manhattan office building that houses the NFL's headquarters had for years sought medical help for frequent, ...

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Shane Tamura, 27, used a rifle identified as an M-4 during the attack at 345 Park Avenue on Monday, police said.