An 18-year-old Taylorsville man and two juveniles were in custody Thursday in connection with a high-speed chase in Iron County that ended with the ramming of a highway patrol car and injuring of a trooper.

The incident began about 9:30 p.m. Wednesday when the trio allegedly filled up their car with gasoline without payingat a service station in the town of Summit, about 10 miles north of Cedar City, authorities said.

Cedar City Police officer Ronnie Judkins located a suspect car, but the driver refused his orders to pull over.

A chase ensued on I-15 at speeds up to 85 mph, as the vehicle weaved through traffic and, at one point, crossed the median and drove the wrong way in northbound lanes, police said.

The vehicle pulled off the freeway at a Cedar City exit and then re-entered it heading north, where it rammed into the parked car of Utah Highway Patrol Trooper Larry Orton.

Orton, who was attempting to warn traffic off the freeway, suffered minor injuries to his neck and elbow, but was back on duty Thursday, a UHP dispatcher said.