PHILADELPHIA (CBS) — The Chester County man who pleaded guilty last fall to sucker-punching a man with cerebral palsy, has filed a lawsuit in federal court, alleging he was beaten up by prison guards.

Barry Baker says a Chester County prison guard slammed his head into a wall and kicked him to the ground as two other corrections officers watched.

Baker’s attorney, Brian Zeiger says the incident took place July of 2017, while his client was awaiting trial.

“There’s a dispute that happens over something going on in his cell, one of the two guards picks him up and throws him in his cell, into the wall in the cell, he is severely injured, he has a concussion, a separated shoulder,” said Zeiger.

The suit claims one guard stood around before stepping in.

It’s said Baker reported the guards. In the lawsuit they described the unsuccessful outcome of that process:

“That’s why we do these, why we go through these processes,” Zeiger said. “Obviously if you have a situation like this and it is just denied that quickly, obviously there’s not a real investigation going on.”

Zeiger claims Baker is now suffering from a seizure disorder as a result of the attack.

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A spokeswoman for Chester County says they do not comment on pending cases.

Baker was originally sentenced to three to six years in prison for assaulting a man with cerebral palsy outside a West Chester convenience store last spring.