A Tucson Police sergeant was shot in the head near Broadway and Alvernon early today and the shooter is still on the loose, police say.

Sgt. Robert Carpenter underwent surgery at University Medical Center and is responding to questions, Tucson Police Chief Roberto Villaseñor said during a press briefing this morning.

Police gave the following account:

Villaseñor said officers responded to a triggered residential alarm at a house in the 4000 block of East Elmwood at 1:43 a.m. There, a man described as Hispanic, between the ages of 20 and 30, fled from the scene on foot from the neighborhood, near Broadway and Alvernon.

He is described as 5-feet, 8-inches tall, weighing 160 pounds and was wearing a dark blue jersey with a red number 43 on it.

After police left the scene, another alarm call came in from the same house at 5:15 a.m. This time, officers found signs of forced entry, Villaseñor said.

While standing outside the residence, officers reported hearing a shot, then seeing Carpenter collapse.

Villaseñor described the incident as “very traumatic” to the officers and said investigators are trying to determine what may have been in the house that made the suspect come back

Anyone with information is asked to call 911.

Stay tuned to azstarnet.com for updates.

Senior Editor, News, Arizona Daily Star, Tucson, Az.