A man in Strathcona County got more than he bargained for when he pulled over to help an apparently stranded driver in on Sunday. 

The 51-year-old man slowed down when he came across an older blue and white Chevrolet pick-up truck parked at an angle across the road.   

An unknown male appeared from behind the truck, holding a firearm and pointing it at the motorist. The armed man kicked the driver's side door of the would-be rescuer's vehicle and smashed the door window with the butt end of his firearm.

When another vehicle approached on the road, the armed man ran back to his parked truck and fled west on Township Road 540.

RCMP say the incident occurred on Range Road 224 just south of Township Road 540.

The suspect is described as Caucasian, between the ages of 35 and 40,  5'8" and 160 to 180 lbs. 

He has short, dark, unkempt hair, discoloured teeth and was wearing large round eyeglasses. Police believe he may have been wearing coveralls.

The pick-up truck the suspect was driving was dirty with possible rust patches and had large knobby type tires. The Alberta license plate possibly had seven digits.