7-Eleven stores in Bethlehem seem to be under attack.
Police said the 7-Eleven at 1426 W. Broad St. was robbed shortly after midnight early Tuesday.
An armed man showed a semi-automatic handgun and made off with around $50 cash, police said.
The robber remains at large.
The 7-Eleven store at 2930 Linden St. was robbed shortly before 4 a.m. Saturday, police said.
This store was robbed by two men who each showed a black handgun. One was an Hispanic man, and another was a light skinned black or Hispanic man.
The two took around $300 cash and cartons of cigarettes.
Police said the store clerk didn't report the robbery at the time, but store employees reported the crime to police on Tuesday.
Another Bethlehem 7-Eleven -- on Catasauqua Road -- was robbed early Sunday, police said.