Police say a getaway car ran out of gas after an armed robbery near Atlanta, leading to the speedy arrest of two suspects.

Corporal Michele Pihera of the Gwinnett County Police Department says 18-year-old Najee Logan and 21-year-old Justin Larry were charged with armed robbery after their arrest early one Tuesday after officers found the car pulled to the side of the road, having apparently run out of gas.

Pihera’s statement says the victim surrendered a wallet to two men at gunpoint in a grocery store parking lot about 1 a.m. that Tuesday. The robbery occurred in a greater Atlanta suburb. Police say officers found the car about 15 minutes later with Logan and Larry inside.

Pihera says it’s possible the victim was just a “target of opportunity,” and fortunately wasn’t hurt, chalking up the arrests to what she called “exceptionally poor planning” by the suspects.