UPDATED July 29, 8:30 a.m. ET

One police officer was shot and killed and another was wounded during a traffic stop in San Diego on Thursday night. A suspect was taken into custody early Friday morning and is being treated in the hospital for a gunshot wound, according to San Diego Police Chief Shelley Zimmerman.

"I'm extremely heartbroken to report that we had an officer shot and killed," Zimmerman said, according to CNN. "[There were] heroic efforts by the officers on scene, heroic efforts by the doctors to save his life."

The two officers involved were part of the San Diego Police Department's gang suppression unit. Police have not yet determined if any other suspects were involved in the shooting. The officer who survived underwent surgery for a bullet wound in the upper torso and is expected to survive, according to the police department's Twitter account

Original story below.

Two police officers were shot in San Diego late Thursday night, according to the San Diego Police Department.

The shooting was first reported just after 11 p.m. local time in the city's Southcrest neighborhood. The condition of the officers is unknown, but they have been moved to hospitals, according to CBS 8. 

Residents of the area are being asked to stay in their homes while the police search for suspects. Several outlets are reporting that one suspect is in custody, though that has not been confirmed by police.

Complex reached out to the San Diego Police Department for comment, but calls were not immediately returned.