It happened at 12:46 a.m. Wednesday in the 100 block of North Dupont Highway.
Police say two masked men, one armed with a handgun, the other with a knife, walked into the store and demanded money from a 34-year-old employee and a 46-year-old customer.
The employee gave them an undisclosed amount of cash from the register. The men took a cell phone from the customer, then ordered both the employee and the customer into a closet and fled.
No one was injured.
State police have released the following description of the suspects:
Suspect 1: Black male, approximately 6', 170 pounds, 20 to 25 years old, wearing a mask, hooded sweatshirt, and jeans. Armed with an unknown type handgun.
Suspect 2: Black male, approximately 6', 170 pounds, 20 to 25 years old, wearing a mask, hooded sweatshirt, and jeans. Armed with a knife.
State Police are asking anyone with information about the robbery or suspects to contact the Robbery Unit at Troop 2 at 302-834-2630 extension #6, or Delaware Crime Stoppers at 1-800-TIP-3333.
Information may also be provided via the internet at tipsubmit.com, or anonymously text-messaged to 274637 (CRIMES) using the keyword "DSP."