From symptoms to the illness' risk factors — here’s what you need to know about the disease, which can only be detected by autopsy.

The suspect's message at the scene may have provided a motive for his attack that killed four at a Park Avenue office building.

Shane Tamura, 27, who shot up a Midtown Manhattan skyscraper on Monday night may have sought to target the National Football League.

Four people were killed when a gunman stormed a skyscraper on Monday evening and opened fire.

Detectives still trying to determine motive in attack that killed four in Manhattan on Monday

L'uomo che a New York ha tentato l'assalto alla sede dell'Nfl accusava il football americano di avergli causato una malattia degenerativa per i troppi colpi alla testa subiti.…

The gunman in the Manhattan office shooting said in a note that he believed he had C.T.E., a degenerative disease linked by studies to repeated hits to the head.

New York City Mayor Eric Adams said that the gunman in a mass shooting in Manhattan had a note on his body mentioning CTE.

Shane Tamura said he had CTE. His claim, which is unproven, has again put a spotlight on the NFL's troubling history with its players and the disease.

The US football league has previously faced legal challenges over its failure to address players’ concussions.

What to know about NYC gunman's football connection, which he mentioned in a note left behind after a deadly shooting where the NFL is headquartered.

Shane Tamura never played in the league, but the police believe he was seeking vengeance over the handling of head injuries in football.

From symptoms to the illness' risk factors — here’s what you need to know about the disease, which can only be detected by autopsy.

Shane Tamura is not the first former football player to shoot himself in the chest and request that his brain be examined.

‘Study my brain,’ the shooter said in a note found in his wallet that claimed he had chronic traumatic encephalopathy.

Information that the killer carried in a note referring to the degenerative brain disease CTE offered a possible motive for the Monday shootings at offices used by the National…

This tragedy was about more than one man’s pain. It was about how football glorifies suffering and how America ignores mental health while arming the broken

New York City's Office of Chief Medical Examiner told USA TODAY Sports it would examine the brain of NYC shooter Shane Tamura.