SOUTHBURY — The cause of a vehicle fire last week appeared to be “mechanical in nature,” state police said.

Emergency personnel responded to a report of a vehicle fire on Old Waterbury Road shortly before 5 p.m. Thursday.

At the scene, they found a blue SUV on the side of the road with its front end engulfed in flames.

The fire was contained to the vehicle’s engine compartment, according to dispatch reports, and crews quickly extinguished the blaze.

All occupants had gotten out of the SUV by the time firefighters arrived, and no injuries were reported.