It happened on March 4 inside the RP Mini Market on the 2000 block of South 64th Street.
The suspect was seen on surveillance breaking into the store just before 4 a.m. by forcing open a back door.
Once inside, he walked behind the counter and stole cigarettes, cash and other items from around the register before fleeing through a rear alleyway.
Police describe the suspect as a male of unknown race with a light complexion. He was wearing a black mask over his face and a hooded sweatshirt.
Anyone with information on this burglary should call Southwest Detectives at 215-686-3183.