Little Rock Police are investigating an armed robbery Tuesday night at the Exxon gas station at 10705 Rodney Parham. Police tell us the suspect walked into the business around 7 p.m. armed with a 12-gauge shotgun. He got away with a large bag of money and cigarettes. Police say the suspect is described as a black male about 6ft tall. He was wearing a white hoodie with a white mask on his face. If you have any information you're asked to call Little Rock Police.