Mandan Police are investigating an armed robbery Tuesday night at a convenience store.
At 10:39 p.m. an employee at Unistop on Collins called 9-1-1 reporting the robbery.
The clerk says a person came in demanded cigarettes when the clerk asked for I.D. the suspect pulled a handgun and demanded the money from the till.
The clerk refused to give him the money and the suspect took off running south on Collins.
Police say the suspect's face was covered, he or she was wearing a hood and a scarf.
Detectives will be looking at surveillance video to get a better look at the suspect.
If you have any information contact Mandan Police at 667-3455.