The former high school football player left a note at the scene repeatedly mentioning “CTE” — chronic traumatic encephalopathy, a brain condition caused by injuries to the head.

The mother of the man who killed four people at a Manhattan office tower home to the NFL told 911 dispatchers during a 2022 incident when he threatened to kill himself that he suffered from a sports-related concussion and other issues,

A New Jersey State Police sergeant, who once served on Gov. Phil Murphy's security detail, is suspected of killing his former girlfriend and the volunteer firefighter.

A state police sergeant fatally shot his ex-girlfriend and her boyfriend before killing himself, Hunterdon County prosecutors say. CBS News New York's Christine Sloan reports.

Police videos, 911 calls, and documents are revealing new details about the man who opened fire in a New York City office building last week, killing four. NBC News’ Erin McLaughlin reports.

President Donald Trump says he’s considering the federal government taking over Washington, DC, and bringing in the National Guard after a former DOGE employee was assaulted in an attempted carjacking.

O'Slatarra, 33, died in the incident, police said. She lived in Manhattan.