It happened Sunday night shortly after nine o'clock at 10623 West Markham Street, just west of Interstate 430.
Workers told police when the suspects came into the restaurant, one of them had a handgun and told one of them to open the cash register. The other workers were told to get on the floor, according to the police report.
After getting the money from the cash register, the gunman told all the workers to go to the back of the restaurant, leading one of them into the office and telling the others to get back down on the floor.
The worker in the office was ordered to open the safe, after which the gunman took the cash inside and all the suspects left.
Two of the suspects are described as black men, 20 to 25 years old, one of whom was 6'0" tall and weighs about 160 pounds. He was wearing a red bandana, gray hoodie and blue jeans. The second suspect was wearing a gray hoodie and blue jeans. The third suspect was described as an unknown race, age, and physical description who was wearing a black coat and blue jeans.
Police have not yet released the security camera video they say captured the suspects going into and out of the restaurant.