ORLANDO, Fla. -- Investigators continued to get conflicting reports from busloads of witnesses over what happened before a University of Central Florida police officer was fatally shot by a Orlando police officer outside the Citrus Bowl, according to Local 6 News.

Orlando Police Chief Michael McCoy described the shooting death Saturday of UCF Officer Mario Jenkins by Officer Dennis Smith outside the Citrus Bowl as "similar to a military training accident." Another person, Mike Young, also was shot but was expected to recover.

Jenkins was wearing street clothes and investigating underage drinking at tailgate parties when he was shot. He got into a scuffle with a student, fired his gun into the air and was then shot by Smith, who was nearby, witnesses said.

"It never should have occurred," McCoy said. "Both officers were doing what we asked them to do. Both officers had a righteous cause."

The FDLE was releasing few details on what led to the shootings, such as what kind of communication there was between the two agencies before the shooting, whether Jenkins was wearing identification that showed he was an officer or whether he had backup.

Agents had identified at least 50 tailgaters who witnessed the shootings before UCF's 23-13 victory over Marshall. But witnesses have given differing accounts.

Some witnesses said Jenkins displayed his badge before pulling his gun and firing shots into the air to presumably gain control of the crowd. Other witnesses said no badge was displayed.

"There was so much conflicting information," McCoy said.

"Without a doubt, he fired two shots in the air," witness Jordan Rodriguez said. "Another gentleman in a white polo shirt, a police officer rolls up and takes the gentleman down."

Neither Richard Turkiewicz, director of public safety at the University of Central Florida, nor McCoy would say whether proper protocol for discharging weapons was followed by both officers.

Sometimes undercover officers forget they're not perceived as officers by others when confronted with a tense situation, said Ed Nowicki, executive director of the National Criminal Justice Training Council.

"Generally, warning shots are not a good thing," Nowicki said from Twin Lakes, Wis. "If an officer is not in uniform and you're working with multiple agencies, that is an added factor." McCoy said Smith was feeling "a lot of remorse."

"You and I can only imagine what he feels like," McCoy said.

Results of the Florida Department of Law Enforcement investigation likely won't be known for 45 to 60 days, said Jay Etheridge, assistant special agent in charge. A report will be presented to the State Attorney's Office and the UCF and Orlando police departments, which would then decide if changes in procedures are needed.

Watch Local 6 News for more on this story.