A federal judge has sentenced a Casper man to more than a decade in prison, for attempting to rob a restaurant employee.

Twenty-one year-old Justin Eberhardt was given a 10 year prison sentence for use of a firearm during and in relation to a crime of violence, followed by an additional 27 months for attempted interference with interstate commerce by means of robbery.

Casper police say last January, a female employee of the Mongolian Grill arrived at a coworkers house with a bank bag from the restaurant.

Investigators say a man wearing a mask approached her and demanded the money at gunpoint.

As she tried to get away the man struck her and the gun went off, but the bullet missed and hit her car.

Neighbors chased the robber away, and he fled in a vehicle that was later found by police.

A search warrant was executed on the vehicle and a nearby house, where officers found the mask and the gun and linked Eberhardt to the items.

Eberhardt pleaded guilty to the charges.

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