DALLAS – WWE.com has confirmed that WWE Hall of Famer Shawn Michaels’ arm was broken during a brutal attack by Brock Lesnar on Monday’s Raw and he will not be at this Sunday's SummerSlam. ( WATCH THE ATTACK |  PHOTOS | FULL RAW RESULTS)

Shortly after the contract was signed between Triple H and Lesnar for their SummerSlam match, Lesnar pulled HBK from his car in the American Airlines Center parking garage, carried him to the ring and brutally assaulted him.

During the attack, Lesnar applied his devastating Kimura Lock. As the WWE COO looked on, Paul Heyman advised him to stay back, or Brock would break HBK’s arm. Apprehensive at first, Triple H eventually rushed in to come to his friend’s aid. Although Lesnar released the hold and exited the ring, the damage was already done.

In severe pain, Michaels left the arena in an ambulance. According to medical personnel, Michaels sustained a fractured radius in his arm, as well as various forearm contusions. HBK also suffered a cervical strain and multiple contusions all over his body. 

WWE.com confirmed with medical personnel that due to the severity of his injuries, Michaels will not be in Triple H’s corner this Sunday at SummerSlam. ( FULL SUMMERSLAM COVERAGE) WWE.com caught up with Triple H shortly after the attack and he spoke about what happened. ( WATCH EXCLUSIVE)

Michaels tweeted Tuesday night: ( @ShawnMichaels) “Thanks to everyone for their concern!! Obviously not in great shape after last night. #SummerSlam looks highly unlikely at this point!!”

Stay with WWE.com for more on Michaels' condition.