SAN ANTONIO — An officer was shot outside the San Antonio Police headquarters building in downtown San Antonio late Sunday morning.

Authorities responded to the scene at 11:40 a.m. on West Nueva Street and Santa Rosa Street, SAPD Chief William McManus said.

McManus said the officer had pulled over a vehicle outside of the Public Safety Headquarters. While the officer was inside his vehicle writing a ticket, a black vehicle pulled up behind him.

The driver of that vehicle got out, walked up to the officer’s driver-side window and shot the officer in the head, McManus said.

Then the suspect reached into the window and shot the officer a second time, he said.

The suspect then got back in his car and pulled away. Police believe the suspect’s vehicle was a black Toyota or Nissan sedan.

Suspect’s car in the officer-involved shooting (Photo: SAPD)

Police said the officer was pronounced dead at San Antonio Military Medical Center around 12:30 p.m. Sunday.

He was a 20-year veteran of the force. His name has not yet been released.

McManus said the suspect is a black male around five-foot-seven to six feet in height, wearing a gray sweatshirt and black baggy pants. The suspect also has a beard.

Police said they do not know what the motive for the shooting was.

McManus said this will be a capital murder case.

Mayor Ivy Taylor released a statement regarding the officer killed on duty:

“I want to extend my deepest condolences to the family of the officer killed outside police headquarters today as well as to our entire police force. This type of crime cannot and will not be tolerated. I ask for the community’s thoughtfulness and patience as the investigation continues and SAPD searches for the suspect.”

If you have any information on the suspect, you are asked to call Crime Stoppers at 224-STOP.

(© 2016 KENS)