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This undated photo released by the Memphis Police Department shows Officer Sean Bolton, who was fatally shot during a traffic stop, Saturday, Aug. 1, 2015, in Memphis, Tenn. Authorities have identified Tremaine Wilbourn as a suspect in the shooting. (Memphis Police Department via AP)
This undated photo released by the Memphis Police Department shows Officer Sean Bolton, who was fatally shot during a traffic stop, Saturday, Aug. 1, 2015, in Memphis, Tenn. Authorities have identified Tremaine Wilbourn as a suspect in the shooting. (Memphis Police Department via AP)

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Officer killed during traffic stop

A Memphis police officer was shot and killed during a traffic stop after police say he interrupted a drug deal. CNN's Nick Valencia reports.

Officer killed during traffic stop

A Memphis police officer was shot and killed during a traffic stop after police say he interrupted a drug deal. CNN's Nick Valencia reports.