FILE - In this Dec. 26, 2010 file photo, San Francisco 49ers cornerback Phillip Adams (35) is attended to after injuring his left leg during the third quarter of an NFL football game against the St. Louis Rams, in St. Louis. 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/Tom Gannam, File)

FILE - In this Dec. 26, 2010, file photo, San Francisco 49ers cornerback Phillip Adams (35) is attended to after injuring his left leg during the third quarter of an NFL football game against the St. Louis Rams, in St. Louis. On Tuesday, Dec. 14, 2021, a coroner is set to release the results of a brain test for chronic traumatic encephalopathy on former NFL player Adams, who was accused of fatally shooting six people in Rock Hill, South Carolina, before killing himself in April. Adams' family agreed after his death to have his brain tested for the degenerative disease linked to head trauma and concussions. (AP Photo/Tom Gannam, File)