Adams said investigators recovered a note in which the shooter, Shane Tamura, talked about CTE.

A shooting at a midtown Manhattan office building on Monday left at least five people dead, including an off-duty New York City police officer, officials said.

A very heavy police presence was observed near 51st Street and Park Avenue.

NFL Commissioner Roger Goodell has informed all New York City-based employees to work from home through next week following the tragic mass shooting that occurred at their headquarters on Monday nigh...

A man with a rifle killed an off-duty New York City police officer and three other people before taking his own life at a Manhattan office tower on Monday, according to officials.

The person, who did not immediately know the victims’ conditions, was not authorized to publicly discuss the ongoing investigation and spoke to the AP on condition of anonymity.