FAIRFIELD — An Easton man is in custody, charged with four robberies at two local gas stations.

Conlin W. Mellen, 24, was charged with four counts of first-degree robbery and four counts of sixth-degree larceny in connection with the incidents. Two of the robberies were at Star Fuels, 350 Jennings Road, on Feb. 11 and March 25. The other two happened at Stratfield Mobil, 12171 Stratfield Road, on March 26 and April 1.

Although Mellen allegedly wielded a knife during the robberies, no one was injured in the incidents, except, perhaps, Mellen. According to police, following the April 1 robbery, a witness who was in a car followed Mellen as he fled the gas station on foot. The witness told police that he bumped Mellen in the back with his car, causing Mellen to fall over into the bushes. He said he believed he injured the robbery suspect.

Mellen then left in a Chevy Silverado with ladder racks. The next day, Officer Samantha Salato — who was on the robbery call the night before — stopped a Chevy Silverado for a motor vehicle violation. The truck was being driven by Mellen, and Salato noticed some characteristics and behaviors that matched the robbery suspect. The officer also noticed an injury to Mellen’s arm. She passed that information along to detectives.

On April 3, Mellen was picked up by police and charged with possession of a controlled substance, and possession of drug paraphernalia. During interviews, Mellen allegedly admitted to some of the robberies.

Mellen was arrested Monday on a warrant at police headquarters and was held in lieu of $250,000 bond and taken to state Superior Court in Bridgeport for arraignment.