Transcript for University suspends fraternity after brawl leaves student injured
the disturbing beating outside a fraternity at Texas state a lawyer for the student who was attacked claiming it left him with traumatic brain injury. Did the young men who attacked mistake him as a member of another fraternity? ABC's linsey Davis with the attack caught on video. Reporter: Another fraternity under fire tonight because of this brawl caught on camera. Leave him alone! We're calling the cops! Reporter: Lawyers say this video shows members or guests of Texas state university's pi kappa phi fraternity attacking Nikolas panagiotopoulos, leaving him badly injured. That's enough! Enough! Reporter: That student claims in a new lawsuit he and a friend were walking past a building leased by the frat when the group "Began to taunt and verbally harass him on a mistaken belief he was the member of different social club." NIK tries to run away. This mob of these fraternity guys chase after him, continue to whale away on him. Reporter: Nearly two months later, his attorney says he's still in a wheelchair, struggling to recover from spine and traumatic brain injuries. Panagiotopoulos is now suing three of his alleged attackers, along with the fraternity's national organization and local chapter for negligence and aggravated assault. It's not just this campus, as many campuses where we're seeing a lack of institutional control by these fraternities and allowing this to go on. Something has to change. Reporter: Texas state university says they suspended the fraternity as soon as they learned about the incident. We reached out to the fraternity's national organization, they tell us they do not comment on pending litigation, David. All right, linsey Davis with us tonight. Thank you.
This transcript has been automatically generated and may not be 100% accurate.