HOUSTON -

Authorities are investigating an accident after they say a man crashed his vehicle into a creek inside George Bush Park.

It happened around 12:30 p.m. Tuesday on Westheimer Parkway in west Houston.

Officials with the Houston Fire Department say the man suffered a medical condition which caused him to lose control of his vehicle.

The man was airlifted by Life Flight to Memorial Hermann Hospital in the Texas Medical Center in an unknown condition.