POCATELLO — A city police officer has been cited for allegedly causing a Thursday night four-vehicle wreck on one of Pocatello’s busiest streets that injured a 27-year-old Utah woman, Idaho State Police said.

State police were called in to investigate the accident, reported at 6:43 p.m. on Yellowstone Avenue just south of Alameda Road.

Pocatello police officer Joel Greenway, 32, of Rigby, was cited by state police for allegedly causing the wreck by following too close to another motorist.

State police said the crash happened when Emily A. Faulkner, of Richmond, Utah, was stopped at the stoplight northbound on Yellowstone Avenue at the Alameda Road intersection.

Then Greenway, driving a Pocatello police vehicle, reportedly hit Faulkner’s 2017 Mazda MZ3 from the rear, causing a chain-reaction crash involving two other vehicles stopped at the light ahead of her, state police said.

Police said Faulkner was transported by ambulance to Portneuf Medical Center in Pocatello. The hospital reported Friday that she was no longer a patient at the hospital.

The others involved in the accident were Sharon E. Obrien, 63, and her passenger, Stephen C. Obrien, 66, both of Blackfoot, who were driving a 2016 Subaru Forester, and Gabrielle S. Tragis, 24, of Pocatello, who was driving a 2009 Ford Fusion.

The only person injured in the crash was Faulkner.

The northbound lanes of Yellowstone Avenue were blocked for about an hour. Everyone involved in the accident was wearing a seat belt.

Pocatello police said they were responsible for bringing in Idaho State Police to investigate the accident.

“We have outside agencies investigate” accidents involving Pocatello police vehicles to “determine if there are any violations,” the Pocatello Police Department said in a statement. “We are not involved in any decision the outside agency makes based on their investigation. We will do an internal review to see if there are policy violations that need to be addressed.”