The brain of Phillip Adams, the former NFL player identified as the gunman who killed five people Wednesday in Rock Hill, S.C., will be examined for chronic traumatic encephalopathy (CTE), a brain disease found in dozens of former players.

At least five people are dead, including two children, in what police in York County, S.C., called a "case of a mass shooting" that involved a former National Football League player as the suspected gunman.