A Kirby police officer was injured as a result of a rear-end crash in the early morning hours of Friday, according to Kirby Police Chief Kevin Bois.

About 3:27 a.m., at a location on Farm-to-Market 78 in the Kirby area, the officer had stopped a pickup for a burned out headlight and was in the process of writing out a warning when a silver Ford F-250 pickup struck his Tahoe patrol vehicle from behind.

The Tahoe was pushed about 30 feet forward as a result of the impact.

The officer was transported to an area hospital for treatment to injuries that are not expected to be life threatening, according to Bois.

The driver who had the burned out headlight was very helpful and called for help and help the officer at the scene while they waited for sheriff's deputies to respond to the scene.

The driver of the pickup that struck the patrol vehicle was arrested at the scene and charged with DWI. According to Chief Bois, that man was an off-duty San Antonio Police Officer.

SAPD said in an email that the officer has been with the force for a year and a half. He has been identified as 40-year-old Armando Alvardo.

Alvardo has been placed on administrative leave while the incident is investigated.

The vehicle in the traffic stop was not struck and no other person was injured at the scene of the crash.