While Tucson Police have detained a person in the shooting of one of their own officers, it's still unclear who that person is and if charges against him are pending.
Police officials haven't identified the so-called "person of interest," though a spokesperson for the agency says "there's a distinct possibility" it was the man described by TPD shortly after the shooting occurred early Sunday morning.
That man was described as an Hispanic male, 20 to 30 years old, about 5-8 and 160 pounds wearing a dark blue jersey, with a red "43" on it.
TPD Sgt. Robert Carpenter, 46, was shot in the head early Sunday after he and several other officers responded to a residential burglary near Broadway and Alvernon.
It was the second time that morning the alarm at the same residence went off.
It was after the first alarm, around 1:45 am, that officers made contact with the person of interest.
He was spotted by TPD on the property of the residence, but fled on foot before more information could be gathered.
The second alarm sounded more than three hours later, around 5:15 am.
Sgt. Carpenter and two other officers were standing in the driveway of the home when a gunshot was heard and Sgt. Carpenter collapsed to the ground.
The shooter was never seen by police. Authorities believe that the high-caliber bullet likely came from a "relatively close" distance.
As for the person detained by TPD Monday night, it's still unclear what role, if any he may have played in the shooting.
"Rumors are running rampant that we captured the shooter," says Tucson Police Sgt. Maria Hawke. "That is not accurate at this point. We don't know for sure who the shooter is...but that's exactly what we are trying to determine."
Sgt. Hawke says the person of interest was interviewed at length Monday night and early Tuesday morning by Tucson Police.
Investigators with TPD's aggravated assault, homicide and burglary units are being accompanied by the US Marshal Service as well as agents with the Bureau of Alcohol, Tobacco and Firearms.
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