WALLA WALLA — What began as an armed group planning to take back a vehicle allegedly stolen from a Pendleton man ended with three locals injured and at least one arrest in Walla Walla.

Charles Thompkins Jr., 63, of Pendleton, was arrested Sunday, Aug. 8, and is accused of organizing 10 other people on July 5 to take a vehicle he claims was stolen from him, Walla Walla County Superior Court documents show.

Thompkins is charged with first-degree robbery, three counts of first-degree assault, first degree burglary, criminal mischief and harassment.

Three people at the Walla Walla house where the vehicle was were injured in a confrontation that involved several firearms, police said.

According to the arrest report, Thompkins told the group, including three of his sons, to go with him to a house in Walla Walla and try to take a white Chevrolet Tahoe. Thompkins “directed the rest of the group to beat up the people who had the Tahoe,” the report stated.

The arrest report said the group “armed themselves with multiple firearms” and drove to a house in Walla Walla in three cars.

While Thompkins claims to own the Tahoe, the arrest report stated he has not provided any evidence of ownership.

Security footage at the residence shows nine people got out of vehicles while two stayed in a vehicle, the report said. Two men carried what appeared to be “long guns,” while two others, including Thompkins, had handguns, the report states.

When the three men inside the home heard the Tahoe start, one went outside to investigate. He said he heard guns “clacking” and someone telling him not to move or they would shoot.

The report said the man then retreated inside, after which he heard a gunshot. When the Pendleton group gave the three men two minutes to come out, one of the Walla Walla men called 911.

The police report stated the Pendleton group entered the building and a fight ensued. When Walla Walla County Sheriff’s Office deputies arrived, they detained the Pendleton residents.

The three alleged victims opted to take their own vehicles to Providence St. Mary Medical Center. According to the report, one left before being treated.

The second victim was treated for a fractured jaw and nasal bone, a laceration of his lip and other cuts and bruising on his face.

The third victim was flown to Kadlec Regional Medical Center in Richland, Washington, where he underwent surgery for a broken eye socket, a fractured finger, a fractured skull and other injuries.

The 10 other members of the group who drove from Pendleton also were named in the arrest report, but the Walla Walla County Prosecuting Attorney’s Office has not confirmed what, if any, charges they face.

Thompkins is in the Walla Walla County Jail on $150,000 bond.