Four victims, including an NYPD officer and a Blackstone executive, were killed in an NYC shooting at 345 Park Avenue.

The 27-year-old Nevada man left a note at the scene voicing anger that his mental illness may be linked to his having played football, officials familiar with the investigation told NBC News.

The 27-year-old man who shot and killed four people at a Midtown office building on Monday carried a note in his pocket, ...

Suspected gunman Shane Tamura had a ‘documented mental health history’ and ‘sprayed’ the Manhattan skyscraper lobby with a military-style assault rifle, police say ...

Wearing body armor and wielding an assault-style rifle, the alleged gunman, identified by police as 27-year-old Shane Tamura, ...

Police are still piecing together Shane Tamura’s movements but his black BMW traveled cross-country through Colorado, Nebraska, Iowa, and New Jersey before arriving at his final destination of New Yor ...

Four people were killed, including an off-duty New York City police officer, when a gunman opened fire in an office tower ...

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada late last week.

A 27-year-old man from Las Vegas drove across the country, walked into a Manhattan office tower with an M4 rifle, ...

A cross-country drive, a Midtown office rampage, and a note blaming football injuries. Here's what we know so far about the NYC shooter and his victims.

A cross-country drive, a Midtown office rampage, and a note blaming football injuries. Here's what we know so far about the NYC shooter and his victims.

A 27-year-old man wearing body armor and carrying an M4 assault rifle shot and killed four people, including an off-duty ...