The parents of a former Drexel University student sued two of the college’s fraternities Thursday for their involvement in a 2015 incident that left their son permanently brain damaged. Ian McGibbon, now 23, was involved in a fight at the time in which he was punched and hit his head on the cement.

The fight was apparently between members of Pi Kappa Phi, which McGibbon was a member of, and another fraternity, Delta Sigma Pi. Campus surveillance video showed two members of Pi Kappa Phi carrying an unconscious McGibbon back to the fraternity house after the fight.

Read: Timothy Piazza’s Family Says Fraternity Brothers ‘Left Him For Dead’ During Hazing

Instead of calling 911, McGibbon was placed in the care of one of the frat brothers and left in the house for 10 hours. The 21-year old “risk manager” watched McGibbon for a few hours before going to sleep.

“Hour after hour, his brain continued to swell as he lay abandoned in his fraternity until his family found him covered in vomit and blood and unconscious,” Bob Mongeluzzi, an attorney for the McGibbon family, said Thursday.

McGibbon’s parents filed a 14-count civil lawsuit against both fraternities and five students involved in the incident Thursday, alleging neglect. McGibbon suffered “catastrophic and permanently disabling injuries,” according to the lawsuit.

“I can’t help but feel if 911 had been called, we wouldn’t be sitting here right now,” his father, Roderick McGibbon said during a press conference announcing the lawsuit. “He should be out getting his career started and instead he’s got his mom and dad helping put his clothes on and tie his shoes.”

Drexel University investigated the incident at the time but charged no one. The school also issued a statement saying it has a policy of providing complete amnesty from any disciplinary actions for students who call for help in the event of an emergency.

McGibbon’s story has eerie similarities to that of Timothy Piazza, a Penn State student who died in February after sustaining injuries during a night of hazing. Piazza fell down a flight of stairs more than once during a hazing ritual that involved consuming excessive amounts of alcohol. An investigation found that fraternity members did not call for help for 12 hours—despite Piazza’s clearly deteriorated condition. Instead, they poured alcohol on him and slapped him in an attempt to rouse him.

Read: Timothy Piazza ‘Looked Like A Corpse’ Before Penn State Hazing Death

Piazza’s family later said a doctor at the hospital told them that if their son was brought in earlier, he would have lived.

“How many more college students are going to be left abandoned on a couch while their brain swells and their brothers, fraternity, don’t call 911?” Mongeluzzi said, referring to Piazza’s death. “When will it end? And how will it stop? And how will the frat system change to prevent this from ever happening again?”

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