A third person is admitting to his role in an armed robbery, at a Casper liquor store, as well as a separate theft.

Twenty-year old Arthur Brown has pleaded guilty to one charge of aggravated robbery, and one charge of grand larceny.

Police say in April, Brown and 20-year-old Shannon Mares 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 given a change of clothing and a ride home.

One week later, prosecutors say Brown stole a $1,200 laptop computer from Best Buy.

Police arrested him a short time later.

Eventually, investigators say he and Mares admitted to their roles in the robbery and said White gave them a handgun to be used in the liquor store robbery.

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

Meanwhile, White and Mares entered into plea deals on similar charges connected to the robbery, and are both waiting to be sentenced.