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, ...

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

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

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

Donations are pouring in to help the family of one of the victims from Monday’s mass shooting at 345 Park Avenue. A GoFundMe has been launched in honor of Aland ...

What we know about Tamura’s life, how he got the assault rifle that he used to kill an NYPD officer and three others, and the ...

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

The progressive brain disease can be caused by repeated trauma to the head and has caused serious health problems for ...

Police have identified the man who entered a Midtown Manhattan office building wearing body armor and opened fire killing ...

I have a pet peeve about news coverage of mass murder. When the story breaks, cable news anchors report, as they first did after Monday’s shooting in Midtown Manhattan, that the killer’s motives were ...

New York City’s deadliest shooting in 25 years – in a state with some of the toughest gun laws in the nation – is raising ...