MEXICO — Police say a pre-existing medical condition may be to blame for a fiery car crash in Mexico that took the life of a cab driver.

Police say 62-year-old Gary McGuire, of Rumford, an employee of Mountain Valley Taxi Service, was traveling west on Route 2 at approximately 1 a.m. Wednesday when his car veered into the breakdown lane, struck an embankment and flipped onto its roof.

The car was registered to the cab company but there were no passengers.

The car was in flames by the time emergency crews arrived and the unconscious McGuire was trapped inside.

He was taken to a nearby hospital where he was pronounced dead.

Although the accident remains under investigation, police say the medical condition may have been a factor.