PHILADELPHIA — The Philadelphia Eagles have placed running back Jay Ajayi on injured reserve because of a knee injury.

A person familiar with the situation says Ajayi tore an ACL and will miss the rest of the season. The person spoke to The Associated Press on condition of anonymity because the team hasn’t announced the severity of the injury.

Ajayi had 29 yards rushing on eight carries and lost a fumble at the Vikings 5 in a 23-21 loss to Minnesota on Sunday. He was acquired by the Eagles from Miami at the trade deadline last season and helped the team win the Super Bowl.