Police in Maine say a dog has thwarted a gas station robbery by biting the suspect twice on the face.

Saco Deputy Chief Jeffrey Holland says the man attempted to rob an employee at a Portland Road gas station Monday afternoon. The employee refused to hand over money and was holding onto his dog when the animal lunged at the robber.

Holland says the man fled in a pickup truck and is still at large.

He described the dog as a "good-sized" pit bull-boxer mix. He says the employee typically brings the dog to work with him.