BOISE, ID. (AP) — A search was underway Thursday in southern Idaho for a man suspected of shooting and killing a motorist on a Utah highway, Idaho State Police said in a statement.

Authorities were searching for Jonathan Llana, 45, near the small city of Burley and described him as armed and dangerous, the statement said.

The shooting happened Wednesday night on a desolate northern Utah stretch of Interstate 84 called Rattlesnake Pass, the Utah Department of Public Safety said in a statement.

A person who was a passenger in a Range Rover called 911 about 10 p.m. to report the driver had been shot by a person driving a silver Volkswagen Jetta, the statement said.

A motorist who is an emergency medical technician stopped on the highway to help the Range Rover’s occupants and confirmed that the driver had died, the statement said. The passenger was injured and taken to a hospital. Authorities did not identify the victims or say how the injured passenger was hurt.

A vehicle matching the description of the Jetta was spotted a short time later in southern Idaho, authorities said. Police tried to stop it but the driver took off and eventually crashed the vehicle into a canal in southern Idaho along Interstate 86.

The driver ran away and authorities were still searching for him Thursday, with a helicopter assisting.

Authorities did not disclose a possible motive for the shooting.

Llana was described as being 5’10” tall, weighing about 150 pounds and with black hair and brown eyes.


UPDATE: A southern Idaho sheriff is warning residents near a manhunt for a shooting suspect to keep their doors locked and be wary of strangers.

Sheriff Jay Heward told The Times-News newspaper in Twin Falls that there are scattered homes in the area of the manhunt. He says residents should avoid picking up anyone seeking a ride, lock up their homes and report any missing vehicles to law enforcement.

The Idaho State Police says Llana is considered armed and dangerous, though Heward says it’s not clear if the suspect still has a weapon in his possession.