Police in three metro counties hope a $10,000 reward will help identify the duo believed responsible for a string of cell phone store robberies.

Crime Stoppers Atlanta is offering the reward for information leading to arrests for suspects in robberies in Gwinnett, DeKalb and Clayton counties, the organization said Thursday.

The first of three crimes believed to be linked happened Aug. 30 at the T-Mobile store on Panola Road in Lithonia. In that incident, two men entered the store and ordered the employees to the back room at gunpoint, according to police. One of the men filled up a trash bag with cell phones before both suspects left through the front door of the store. The two drove away in a green late-model vehicle.

On Oct. 8, two men robbed the T-Mobile on Mt. Zion Road in Morrow, leaving the scene in a silver Dodge Magnum, police said. Two days later, two men entered a T-Mobile on Holcomb Bridge Road, near Norcross, according to police. In that incident, employees were held at gunpoint and forced to fill a trash bag with phone and cash.

Any information on the case can be submitted anonymously to the Crime Stoppers tip line at 404-577-8477 or online at www.crimestoppersatlanta.org.