Robert Stone walking from a stolen Jeep used to steal the Haz Mat trailer from Tualatin Valley Hospital.

A man authorities called the “primary suspect” in an auto-theft ring was arrested in Keizer Monday morning.

His arrest came after a 6:40 a.m. phone call from the Goodwill Industries store on River Road reporting a shoplifter who had asked a loss control staffer “if he knew anyone interested in buying some drugs,” according to Don Thomson, a spokesman for the Marion County Sheriff’s Office.

The suspect is believed to be involved in thefts of a vehicle, four trailers and other stolen property. Polie

The suspect was found in the parking lot by Keizer Police Officers Arsen Avetisyan and Joel Hageman as the suspect was getting into a vehicle, later identified as stolen from Hillsboro.

He was arrested after a short foot chase. Arrested was Robert Alan Stone, 40, of Turner, for theft, two counts each of unlawful use of a stolen vehicle and possession of stolen property, probation violation, interfering with a police officer and possession and delivery of a schedule II controlled substance.

The arrest came more than a week after Marion County deputies recovered a stolen Jeep Cherokee and trailer on Fern Ridge Road SE a few miles east of Stayton Friday, May 13. Acting on an anonymous tip, deputies arrived to see two men and the Cherokee; one fled in the Jeep while another fled on foot into nearby bushes.

Arrested closeby was Jeremiah Rew, 35, of Lyons. He was arrested for trespassing, interfering with a police officer and parole violation.

A second stolen vehicle was found later that day near the Shellberg Falls trailhead on Fern Ridge Road; it’s believed to have been used in a hazardous materials trailer theft from Tualatin Valley Hospital on May 7.

That trailer and most of its contents were found in a Mill Creek Road home. Two more trailers were found near another home on Fern Ridge Road. According to deputies, suspects tricked a 90-year-old woman into storing the trailers on her property.

Two other deputies, Paul Vasta and Senior Deputy nancy Hubbard, spotted a green Ford pickup truck pulling a trailer they later learned to be stolen. Police identified the driver as Terrence Grandy, 49, of Marion. He was arrested for theft.