Shannon Germanton, Wash. mom, arrested after allegedly abandoning her kids on side of Interstate 90

Shannon Marie Germanton Kootenai County Sheriff's Office/KREM

(CBS/KREM/AP) SPOKANE, Wash. - Police say they arrested a Washington state woman after a construction worker found her two young children alongside a highway in Idaho on Tuesday.

Shannon Marie Germanton, 27, was arrested at her home in Spokane Valley Tuesday and booked into the Spokane County Jail, CBS affiliate KREM reports. Officers said Germanton was arrested on an outstanding warrant of negligent driving.

According to the station, a construction supervisor working at a project on Interstate 90, found two boys, ages 3 and 6, sitting in the grass near a construction area around 9:10 a.m.

The boys told deputies that their mother had run out of gas and gone for help, KREM reports. They said their mother had walked them to the location while it was still dark and raining.

Investigators learned that the boys' mother was given a ride to a gas station between 6:30 a.m. and 7:30 a.m. She told the driver she had argued with her boyfriend and needed to get to a phone to call for a ride.  Sheriff's spokesman Ben Wolfinger said Tuesday afternoon that no car was found near where the boys were waiting.

According to the Spokesman-Review, Germanton is waiting to be extradited to Idaho for two felony charges of injury to a child. Her bond is set at $50,000.

Meanwhile, the children have been placed in foster care with the Department of Health and Welfare Child Protective Service, KREM reports.