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A federal grand jury on Wednesday returned an indictment against a Utah man accused of impersonating an Air Force investigator to try and score tickets to Salt Lake Comic Con, authorities said.

Jonathon Wall, 29, allegedly posed as a special agent with the Air Force Office of Special Investigations and "demanded VIP tickets to the event under the ruse that he was entering the VIP area to apprehend a wanted fugitive" on Sept. 24, according to the U.S. Attorney’s Office for Utah.

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Wall, of Layton, was discovered when a retired Salt Lake City police officer working security at the pop culture event questioned his story and notified real special agents from the Air Force law enforcement agency, prosecutors said.

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Wall faces charges of impersonating a federal officer and making false or fictitious statements, according to the indictment.

A number for Wall could not immediately be found. It was unclear if he had an attorney Wednesday evening. Wall is not in custody but a summons will be issued, prosecutors said.

The maximum potential sentence for impersonating an officer is three years in prison and the maximum for making fictitious statements is five years in prison, prosecutors said. Each charge carries a potential fine of up to $250,000.

More than 120,000 people are estimated to have attended the three-day event, which featured a panel by "Captain America" actor Chris Evans among other celebrities, NBC station KSL reported.