Five Walt Disney World visitors and an employee were injured Tuesday after a water ride that simulates a trip down a rain forest river malfunctioned, authorities said.

Disney spokeswoman Jacquee Polak said the injuries were not life threatening, but she couldn't be more specific.

Polak said it was not immediately clear what happened on the Kali River Rapids ride, but somehow it malfunctioned about the point that guests transfer from floats to a walkway. The ride simulates a river rapids trip through a rain forest in the Animal Kingdom part of Disney World.

"Nothing like this has ever happened," she said.

Disney closed the ride to investigate.