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