The first robbery happened at 12:38am Tuesday at the AM/PM at 6190 South Virginia Street.
Police say a gunman pointed a dark colored handgun at the store's clerk and stole some cash, and then ran away heading east from the business.
The suspect is described as a white man, 5'8"-5'10" with a medium build. He was last seen wearing a light blue hooded sweatshirt.
The second robbery happened late Wednesday night at 11:47 p.m.
Police say an unknown race man walked into the store with an unknown weapon and demanded money from the clerk. The clerk gave him an undisclosed amount of cash and he fled the area.
They say this robber is about 5' 8" tall with a thin build wearing a black ski mask.
Police were immediately able to say if the two robberies were related.
If you have any information you are being asked to call Secret Witness at 322-4900 or text your tip to 847411. Your call will remain anonymous. A $1,500 reward is being offered.