NFL

Source: Steelers RB Bell to miss rest of season with knee injury

PITTSBURGH, PA - NOVEMBER 01: Medical staff tend to Le'Veon Bell # 26 of the Pittsburgh Steelers after being injured in the 2nd quarter of the game against the Cincinnati Bengals during the game at Heinz Field on November 1, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)

PITTSBURGH, PA - NOVEMBER 01: Medical staff tend to Le'Veon Bell # 26 of the Pittsburgh Steelers after being injured in the 2nd quarter of the game against the Cincinnati Bengals during the game at Heinz Field on November 1, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)

A horrific Sunday for the Pittsburgh Steelers appears to be a full-blown nightmare.

FOX Sports NFL Insider Alex Marvez has confirmed previous reports that All-Pro running back Le'Veon Bell will miss the rest of the season with a knee injury.

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FOX Sports NFL Insider Mike Garafolo reported the injury is "likely" a season-ender and that former Rams running back Isaiah Pead will likely be brought in for a workout.

Bell suffered the injury during the second quarter of Sunday's 16-10 loss to the Bengals when his knee bent backward while being tackled on the sideline following a catch. Bengals linebacker Vontaze Burfict, who made the tackle, appeared to celebrate with teammates on the other side of the field well after the play, catching the ire of Steelers players following the game.

Before news of the severity of the injury, Bell tweeted a thank you to fans.