Former NFL linebacker Kevin Mitchell died in his sleep at the age of 36. Mitchell died overnight Sunday at his home in Ashburn, near the Washington Redskins' training facility, according to the team. An autopsy was performed Monday by the Virginia state medical examiner's office. The cause of death was not immediately announced. Mitchell was drafted in the second round out of Syracuse in 1994 by the San Francisco 49ers, who moved the undersized college defensive lineman to linebacker.