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 ...

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

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

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

It's a point borne out by recent research from ASIS International, a global organization of security professionals, that showed 14% of companies had no comprehensive plan to address active-assailant ...

Multiple coaches, including Aaron Glenn of the New York Jets and Brian Daboll of the Giants, opened their news conferences by referencing the shooting.

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

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

Mourners packed a New York mosque to honor a Bangladesh-born police officer who was killed at an office building this week.