A mass shooting in Rock Hill, SC on Wednesday left at least five dead, and a source familiar with the investigation said that the shooter was former NFL player Phillip Adams, who then shot and committed suicide.

The anonymous source said Adams’s parents lived in Rock Hill, near the home of Dr Robert Lesslie, who was one of five victims of the shooting. Lesslie’s wife, Barbara, was also killed, along with two of their grandchildren, Adah Lesslie, 9, and Noah Lesslie, 5, and James Lewis, a 38-year-old man who worked for the Lesslies. A sixth person was hospitalized with serious gunshot wounds.

York County Sheriff’s Office spokesman Trent Faris said MPs found the person they believed was responsible for the shooting after hours of searching. According to the anonymous source, Adams is believed to have committed suicide in the wee hours of Thursday morning.

Adams was selected in the seventh round of the 2010 draft by the San Francisco 49ers. He ended up playing for the 49ers, Patriots and Raiders for four seasons. He was last signed by the Atlanta Falcons in 2015, but ultimately didn’t play a game for them.