A man was severely injured in an altercation at Dodger Stadium on Friday, and the Los Angeles Dodgers said they are cooperating with the police investigation into the incident.

"Last night, an altercation occurred suddenly between two men who were leaving the stadium," the Dodgers said in a statement Saturday. "One of the men was injured as a result of the altercation. A witness immediately reported the incident to stadium personnel, and emergency medical technicians were promptly dispatched to provide medical assistance at the scene. The matter is now being investigated by the Los Angeles Police Department, and the Dodgers are cooperating fully with the investigation."

The man, identified as Rafael Reyna by his wife, Christel, is in the hospital and on life support after he suffered a fractured skull among other head injuries. Christel Reyna told KABC that she was on the phone with her husband as he left the game against the Diamondbacks and said all she heard was Rafael Reyna arguing with someone and then a loud cracking sound.

"I was hearing the arguing happening and then I heard like a smack, a crack," Christel Reyna told KABC. "It sounded like a baseball bat, and then I heard him start moaning."

Police say the 47-year-old man was punched once by another man and fell to the ground in a parking lot. Police say they are investigating the encounter as an assault and looking for a person in their 20s who drove away in a white SUV. No arrests have been made.

In 2011, San Francisco Giants fan Bryan Stow suffered brain damage and was permanently disabled when he was assaulted outside Dodger Stadium on Opening Day. The two men who attacked Stow would receive prison sentences of four and eight years, respectively, and be ordered to pay a share of the $18 million judgment against the Dodgers.

The Dodgers increased security outside the stadium following that attack.

The Associated Press contributed to this report.