FILE - In this July 30, 2014 file photo, Seattle Seahawks' Phillip Adams runs during an NFL football camp practice in Renton, Wash. 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/Elaine Thompson, File)