KANSAS CITY, Mo. -- More than two dozen investigators assembled at the Worlds of Fun theme park Monday to probe the cause of a weekend roller coaster accident that injured nine people.
One train on the popular Orient Express ride slammed into the rear of another train as they were entering the roller coaster station at the end of the ride Sunday evening. Each train was carrying 28 passengers.
Firefighters used ladders to rescue a number of the passengers stranded high above ground, while others on the ride climbed from car to car and onto the track to reach the station.
Eight people on the ride were treated for neck injuries and bruises at area hospitals and were released, but one Kansas City man remained hospitalized suffering from back discomfort, a hospital spokeswoman said.
Trains can reach speeds of 65 mph. However, it was not clear how fast the trains were going at the time of the accident -- the first at Worlds of Fun on that ride, said Tom Finholm Jr., the park's general manager.
'We'll be going through that thing with a fine tooth comb,' said Lori Gann, a spokeswoman for the theme park. We're not going to rush it. We're going to take our time to find out what happened.'
The ride will remain closed until officials are certain what caused the accident, said Sherry Schmitt, a spokeswoman for the park.
At least 24 investigators and representatives from Arrow Dynamics Inc. of Clearfield, Utah, which designed and built the Orient Express, and from various Worlds of Fun departments were at the accident site Monday.
An Arrow spokesman declined to comment on the accident. 'Neither train has been moved,' Gann said. 'We want to keep everything as it was so that everything is intact so they can examine it.'
The Orient Express has drawn 8.5 million riders since it opened in 1980, GAnn said.