A Casper man is now admitting he helped conceive a plot to rob a local liquor store.

Twenty-year-old Shannon Mares has pleaded guilty to one charge of conspiracy to commit aggravated robbery.

Police say in April, Mares and 20-year-old Arthur Brown robbed Moonlight Liquor on East 12th Street at gunpoint, then went to 30-year old Pete White’s home a few blocks away, where they were provided with a change of clothing and a ride home by White.

Mares was arrested a week later on an unrelated shoplifting incident.

Eventually, he and Brown admitted to investigators about their part in the robbery and said White gave them a semi-automatic handgun.

White admitted to officers that he provided transportation to Brown and Mares on different occasions, and that the other two were at his home before and after the robbery, but did not know about it until later, and denied having any connection to the weapon used.

As part of a plea deal, prosecutors will seek no more than a 10-year prison sentence against Mares.

Meanwhile, White has entered an Alford plea to a conspiracy charge against him and is awaiting sentencing.

Brown has pleaded not guilty to his role in the case and is awaiting trial.