Here is the article I have seen:
Breaking News: Accident at Animal Kingdom
May 29, 2007
WDWINFO.COM - (5/29 - 12pm) While details are still sketchy, it appears there has been a major accident at Animal Kingdom this morning that sent several guests to the hospital, and forced an entire section of Animal Kingdom to close down.
According to unconfirmed reports, a piece of equipment being used by workers on a bridge over the ride collapsed, and struck a raft full of guests. According to one eyewitness, the water at Kali River Rapids was "red with blood". Several ambulances and emergency personnel were on the scene. There are no reports of fatalities, but some on the ride were severely injured.
More information to follow as details become available.