MEDFORD, Mass. -- Two gas station robbers got a surprise Tuesday night when they attempted to hold up a convenience store in Medford. The clerk pulled a handgun out of his pocket and shot at them.

Video

Jack Harper Reports On Robbery

NewsCenter 5's Jack Harper reported that the attempted robbery took place about 9:30 p.m. at Fred's Gas and Auto Service station on Mystic Avenue.

According to police, two black males wearing black leather jackets and black masks entered the store with firearms.

"A handgun was pointed at the attendant, the attendant had a handgun on his person, and shot the suspect several times," said Medford police Capt. Michael DiChiara.

The gas station had just installed a new surveillance system after a series of robberies in the area. The surveillance tape may be the key to determine if the shooting was justified.

"It is too early to tell, but hopefully we have the video at the scene. We are processing that right now with help of state police and that will give us better clarification as to what happened. At the time, according to the attendant's statement, he feared for his safety, noticed the handgun, appeared to be an automatic pointed at him and he fired in the direction of the weapon," said DiChiara.

The wounded suspect fled, but collapsed about 100 yards down the street. Police said they found a semi-automatic handgun on him. The unidentified suspect was taken to Massachusetts General Hospital, where he is being treated for several gunshot wounds. The station attendant's gun was registered and he was licensed to carry it.

"In the past six months to a year, we've had several robberies. Same description of suspects. In Medford, Malden, Somerville, Everett, Cambridge, all around," Medford Police Lt. Paul Covino said.

Fred's Gas Station has been held up three times already. The shooting was captured on surveillance camera. Police said Tuesday's suspects may be behind the other robberies.

One suspect, said to be from Cambridge and known to police, underwent surgery at a Boston area hospital and is listed in critical condition. Police say they have some leads as to the identity of the second suspect.