A Dallas police officer faces a robbery charge after an incident last month in which he claimed to have been held hostage and shot while working off-duty security at a Sam's Club in the Red Bird area.
Officer Alph Coleman's story did not match what investigators found on the surveillance tape, police said during a Tuesday afternoon news conference, NBC5 reported.
The robbery attempt failed, and Coleman was taken from the store and reportedly exchanged gunfire with the suspect before escaping, said Lt. Vernon Hale, a Dallas police spokesman.
"After an extensive investigation into the incident, evidence has been obtained implicating Officer Coleman in the planning and execution of the attempted robbery," Hale said in a statement.
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Coleman, who had been placed an administrative leave during the investigation, and will be arrested, Hale said.
Coleman has been with the department for almost four years and has no disciplinary history.
Two fellow officers were injured while speeding to help Coleman the night of the call, NBC5 reported.