Updated

DEVELOPING: At least eight people were injured when a Walt Disney World bus and a charter bus collided Tuesday in Lake Buena Vista, Florida, according to local reports.

Witnesses told MyFoxOrlando.com the Mears charter bus was parked just off the right lane of Epcot Center Boulevard and the driver was standing outside of it when the Disney bus hit it. No passengers were on the charter bus.

All of the injured passengers were aboard the Disney bus, Florida Highway Patrol said.

The Disney bus driver was airlifted to Orlando Regional Medical Center in serious condition, MyFoxOrlando.com. The seven injured passengers were taken by ground to Florida Hospital Celebration Health with non life-threatening injured.

It was unclear why the accident occurred.

Tuesday's crash is the second within a year to occur on Disney property and involve a bus. In July 2009, a woman died after she crashed her car into a bus near the Contemporary Resort on World Drive.

The Associated Press and NEWSCore contributed to this report.

Click here to read more on this story from MyFoxOrlando.com.