In this April 9, 2011, file photo, LSU quarterback Jordan Jefferson passes during a spring NCAA college football game in Baton Rouge, La. Police are investigating allegations that Jefferson and unidentified teammates were involved in a fight outside a Baton Rouge bar early Friday, Aug. 19, 2011. (AP Photo/Bill Haber, File)

BATON ROUGE, La. - Police are investigating allegations that LSU quarterback Jordan Jefferson and unidentified teammates were involved in a fight outside a Baton Rouge bar early Friday morning.

Baton Rouge Police Sgt. Donald Stone said witnesses claimed Jefferson and other players were involved in a fight in the parking lot outside Shady's bar around 2 a.m., but investigators hadn't substantiated that allegation or spoken to Jefferson.

"We are not naming (Jefferson) as a suspect at this time," Stone said. "We're in the early stages of our investigation."

LSU coach Les Miles said some players were present during the incident, but he didn't identify them.

"We don't know to what extent our players were involved," he said in a statement. "We are trying to gather as much information as possible to get a better understanding of what exactly took place last night."

Stone said four people suffered minor injuries in the fight and took themselves to local hospitals, but Jefferson wasn't one of them.

Nobody was immediately arrested or charged in the case.

Jefferson is the projected starting quarterback on a team expected to compete for a national championship this season.

Jefferson, a senior, guided LSU to an 11-2 record last season. He is 20-7 as a starter, but the team ranked last in passing in the Southeastern Conference last season, with 155.6 yards per game.

The team wasn't scheduled to practice on Friday. LSU's season-opening game against Oregon will be played Sept. 3 at Cowboys Stadium in Arlington, Texas.