BARRE -- A police investigation is continuing here to determine how a Cadillac, with two grown men inside, ended up submerged in a swimming pool and needing to be rescued Wednesday afternoon.

According to Barre police, it appears that Edward Harnois, 64, who was behind the wheel, drove the car into the swimming pool at his 39 North Brookfield Road residence. His grandson, Jeffrey Harnois, 25, was a passenger.

Jeffrey's father, Edward Harnois Jr., 43, was inside his father's home at the time, and told police he heard a loud bang, went outside, then rescued his son and father; another individual in the home called emergency dispatch at 12:56 p.m.

Grandfather and grandson were taken to the University of Massachusetts Medical Center in Worcester. Police did not have information on their conditions.

At the scene, the men told emergency responders that they were in pain; Jeffrey suffered a face laceration, police said.

Barre police said their investigation aims to determine whether mechanical problems or operator error caused the incident.

Police said that prior to entering the pool, the Cadillac smashed through a wooden fence in the yard.

According to police, TJ & Son's of Templeton used their heavy equipment to extract the automobile from the pool, and the scene was cleared by 2:45 p.m.