FILE - In this Dec. 15, 2013 file photo, Oakland Raiders defensive back Phillip Adams (28) gestures while playing against the Kansas City Chiefs during the second half of an NFL football game in Oakland, Calif. A source briefed on a mass killing in South Carolina says the gunman who killed multiple people, including a prominent doctor, was the former NFL pro. The source said that Adams shot himself to death early Thursday, April 8, 2021. (AP Photo/Marcio Jose Sanchez, File)