Arlington police are investigating a deadly shooting that took place Wednesday night on I-20.

The department said in a news release that two vehicles were hit by gunfire on the westbound lanes of the highway near Bowman Springs Road. The driver of one of the cars was hit, but managed to pull off to a nearby gas station and call 911. 

When officers arrived around 7:40 p.m., police said, they found the injured driver as well as a woman who had been hit by gunfire and was unresponsive. The woman, identified as 29-year-old Breasia Johnson, was taken to a hospital where she was pronounced dead. Police said that investigators believed she may have been pregnant.

The driver was hospitalized for treatment. There were also two children inside the vehicle who were not hurt, but were evaluated at a hospital as a precaution, police said.

Police later learned of a second vehicle that was hit by gunshots in the area, but no one inside was hurt.

Detectives are investigating what led up to the shooting and following up on leads, the department said. No one has been arrested. Anyone with information is asked to contact Arlington PD or Tarrant County Crime Stoppers.