According to police, around 9:50 p.m., an armed robbery took place at Stratfield Mobil Gas Station located at 1271 Stratfield Road.
Officials say a man wearing a hat and with a covered face demanded money from the clerk while he was armed with a knife.
After taking the cash, the suspect then fled the scene and ran south on Stratfield Road.
Police describe the suspect as a short, stocky man who was wearing a white head cover and had a black t-shirt wrapped around his nose. He was also wearing a gray long-sleeved shirt, gray sweatpants and black shoes.
The clerk was not harmed during the incident.
Anyone with information on the robbery is asked to contact Fairfield police at 203-254-4840.