New York City mass shooting suspect Shane Tamura was a former high school football star who claimed he had CTE, according to a report from ABC News. Tamura allegedly shot and killed four people at a skyscraper in New York City on Monday.

By Casey Tolan, Allison Gordon, Curt Devine, Jeff Winter, CNN (CNN) — A decade before police say he gunned down four people at a Manhattan tower that is home to the National Football League, Shane Tam

Shane Tamura killed four people at a Manhattan office building Monday, including Blackstone executive Wesley Lepatner and New York City police officer Didarul Islam. The head of the NYPD said investigators plan to question a man who supplied parts for the gun that was used in the attack.