A Kansas University student was hospitalized with critical injuries after he fell from a retaining wall near 11th and Indiana streets early Sunday morning, the president of his fraternity said.

Sam Hedrick, a member of Tau Kappa Epsilon fraternity, was taken to Kansas University Hospital in Kansas City, Kan., at 1:30 a.m. Sunday.

“We all rushed to the hospital as soon as we heard he had gotten hurt,” said Kris Nielsen, local TKE president, who was not with Hedrick at the time of the fall.

Hedrick received a concussion from the fall, Nielsen said. He was transferred to KU Hospital after first being treated at Lawrence Memorial Hospital about 1 a.m. Sunday, a hospital spokeswoman said.

Nielsen said he was unsure what caused the fall and that the incident was not related to any official event hosted by the fraternity, which does not have a central house in Lawrence. He said he had been in contact with national TKE fraternity leaders and KU’s Intrafraternity Council.

“Alcohol was involved,” said Capt. Schuyler Bailey, KU Public Safety Office spokesman. Bailey said the man, whose age was not available, had not received any citations as a result of the incident.