New England Patriots defensive end Ty Warren is starting training camp on the active physically unable to perform list.

Others on the list announced Thursday are linebacker Shawn Crable, offensive linemen Mark LeVoir and Rich Ohrnberger and defensive lineman Darryl Richard. The team also put cornerback Shawn Springs and wide receiver Brandon Tate on the active non-football injury list.

Warren, a starter for the last five of his six seasons with the Patriots, missed three games last season with a groin injury. He had groin and knee operations in the offseason. Crable, a third-round draft choice last year from Michigan, didn't play as a rookie and spent the last eight games on injured reserve with a shin problem.

Players on the active PUP list can return in training camp when the team decides they're ready.