By Robbie Owens, CBS 11 News

WESTLAKE (CBSDFW.COM) – A three-vehicle crash in Westlake has sent three people to the hospital, including a police officer. The incident happened just before 4:00 a.m. Thursday morning at the intersection of Highway 170 and Highway 377.

According to authorities at the scene, a Northlake Police Department officer was stopped at the intersection behind an 18-wheeler. A white pickup truck came up from behind at 60 to 65 mph and ignored the red light. The white pickup truck rear-ended the police officer in his SUV, which then in turn rear-ended the 18-wheeler.

The police officer was in the process of transporting a prisoner from the Keller Jail. Both the officer and the prisoner were taken to the hospital via air ambulance. “We don’t know the condition,” said Lt. Brenda Slovak with the Keller Police Department. “They were both CareFlited, the police officer and the prisoner that was in the back of the SUV. They were transported downtown.”

The driver of the white pickup truck was also transported to the hospital. Police said that open containers were found in that truck. That driver, described as a male probably in his 20s, is now under investigation for intoxication.

The driver of the 18-wheeler was not injured.

Police had to shut down the busy north Tarrant County intersection for several hours on Thursday morning to conduct an investigation and clean up the scene. But according to authorities, this appeared to be a clear-cut case. The intersection was re-opened in time for the peak of Thursday morning’s rush hour traffic.