The New England Patriots fear that star tight end Rob Gronkowski has a torn ACL in his right knee, a source told ESPN NFL Insider Adam Schefter.

Gronkowski, who suffered the injury in Sunday's wild 27-26 win over the Cleveland Browns, will undergo an MRI on Monday, according to the source.

FoxSports earlier reported that the Patriots believed it was a torn ACL.

New England announced during the game that Gronkowski suffered an injury to his right leg. Patriots coach Bill Belichick revealed after the game that Gronkowski was taken to a hospital.

"Rob was taken to the hospital for observation and evaluation on his injury," Belichick said. "That's all I have on it."

Gronkowski suffered the injury in the third quarter after hauling in a pass up the seam from Tom Brady. The two-time Pro Bowler took a direct hit to his right knee by Browns safety T.J. Ward and fell to the ground, clearly in pain.

"It was a decision I made just to make a tackle on a big man and unfortunately he got hurt, but if I would've hit up high, there's a chance I would get fined and all that other stuff. I'm just being safe," Ward said.

Medical personnel immediately came to Gronkowski's side, and he was eventually taken off the field on a cart. The burly tight end was unable to put weight on his right leg as he moved from the ground to the cart.