A Kennewick man will get mandatory drug treatment while locked up for stealing about one dozen firearms from a motorhome parked in a storage unit.
Seth A. Holbrook, 36, was a suspect in a rash of Kennewick burglaries involving guns, cars and other property.
On Thursday, Holbrook pleaded guilty in Benton County Superior Court to residential burglary, possessing a stolen firearm and seven counts of theft of a motor vehicle.
He initially was charged with one count of first-degree burglary, but prosecutors added more charges as the investigation progressed.
Holbrook had no felony history before these crimes. He was ordered to serve two years and almost seven months on a prison-based Drug Offender Sentencing Alternative.
Co-defendant Corey D. Mansfield, 32, also pleaded guilty in his own case for possessing a stolen firearm and first-degree rendering criminal assistance.
Deputy Prosecutor Terry Bloor wrote in court documents that he believed Mansfield was not as involved as Holbrook and other suspects. Mansfield drove to the storage unit one time and had temporary possession of at least one firearm, a Ruger 7mm pistol.
Yet, he was facing prison time like Holbrook, so Bloor recommended a sentence below the standard range at six months in county jail. The court agreed it was an appropriate sentence.
Mansfield had no prior felony convictions and two prior misdemeanor convictions.
The motorhome owner discovered in late February that someone had forced their way into the RV, which was parked in a Richland mini-storage unit, according to court documents.
A few days later, police interviewed a woman who admitted providing transportation to Holbrook, Mansfield and Aaron Garrett. She said Holbrook broke into the storage unit and then got into the RV, from where he called her and asked for another ride.
Holbrook went back the next day and got into a safe inside the RV, where he found 10 to 15 firearms, documents said. Holbrook was dropped off at Mansfield’s house, then the two men returned to the business to load up the firearms that Holbrook had stashed in a nearby location.
Mansfield admitted handling some of the stolen weapons after they took the items to his North Steptoe Street home in Kennewick.
Police said Holbrook had used a stolen car to transport the guns. The 2014 Scion FR-S was taken from Toyota of Tri-Cities.
Kennewick police asked for the public’s help early this year in solving the rash of burglaries. A confidential informant ultimately helped lead to the March 3 arrest of the suspects by the Tri-City Regional SWAT Team.
Online court records show Garrett has not been charged in relation to the storage unit burglary.