A Houston police officer was injured in a crash with another vehicle in northwest Houston overnight, and he’s expected to recover, according to the Houston Police Department.

The officer was driving westbound on Clay Road, and a civilian was vehicle heading north on Gessner Road when the two collided in the intersection, Sgt. Barrow told OnScene TV. Police were investigating which driver had a green light and which had a red light, but early reporting indicated the civilian blew through a red light at a high rate of speed, he said.

The officer appears to have had the green light, Barrow added. He did not say when the crash occurred.

He said police detained and were evaluating the civilian for a possible DWI. Police have neither identified the driver nor announced any charges in the case.

Barrow said the officer, who was on a normal patrol at the time of the crash, was recovering.

This story may be updated.