Le'Veon Bell is attended to by team doctors after a play that had his knee wrenched. Could be a season ending injury.

PITTSBURGH — Steelers All-Pro running back Le'Veon Bell is done for the season after Pittsburgh placed him on injured reserve today.

Bell hurt his right knee in a 16-10 loss against Cincinnati on Sunday.

In six games this season — he missed two while serving a league suspension — Bell rushed for 556 yards on 113 carries with three touchdowns. He had 24 receptions for 136 yards.

Veteran DeAngelo Williams will become the starter. The Steelers (4-4) also signed free agent running back Isaiah Pead to take Bell's spot on the roster.

Bell caught a pass from Ben Roethlisberger in the second quarter Sunday and his right knee twisted awkwardly underneath him during a tackle by linebacker Vontaze Burfict.