This undated photo provided by Texas Tech University shows Hollis Daniels. A Texas Tech University police officer has been shot and killed at the campus police headquarters, prompting a lockdown of the campus on Monday, Oct. 9, 2017. University spokesman Chris Cook says campus police brought Daniels, suspected of drug violations to police headquarters on Monday. The suspect pulled a gun and shot an officer in the head, killing him and then fled on foot and has not been captured, according to Cook. (Texas Tech University via AP)
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