The employee complied and the men ran out of the store and, according to witnesses, they got into a green four-door Saturn station wagon, driven by a third male.
The car was later discovered near the scene of the crime.
Investigators say the suspects may be responsible for several robberies in and around the area.
The suspects are described as black males between 18 to 25 years old. One suspect is around 6 feet tall and weighs between 190 to 220 pounds. He has a light complexion and was wearing a red bandana that covered his face. The second suspect is around 5-foot-9 to 5-foot-10 and weighs between 160 to 170 pounds. There is no description available of the getaway driver.
Crime Stoppers will pay up to $5,000 for any information called in to the 713-222-8477 tips hotline or submitted online at www.crime-stoppers.org that leads to the identification, charging or arrest of the any of the suspects in this case. Tips can also be sent by text message - Text TIP610 plus your tip to CRIMES (274637). All tipsters remain anonymous.