Surveillance photos captured the Sept. 11 robbery at the Harris Teeter on Horton Road in Durham.
Investigators said two men with their faces covered entered the store just before 3:30 a.m. and broke into several self-check out machines.
They took cash and fled the store in a gold-colored car.
Both suspects were wearing jeans, black hoodies, sweatshirts, tennis shoes, black gloves and coverings over their faces. One man was wearing a red toboggan.
One suspect was armed with a gun, but no one was in the area during the robbery.