Transcript for 4 Killed on Ride at Australian Theme Park
But first we want to get to that breaking news. There was a deadly accident on an amusement park water ride in Australia. Four people were killed. ABC's Linzie Janis has the breaking new details. Good morning. Reporter: This is a very common kind of ride. Almost everyone who has been to a big amusement park has been on or at least seen a ride like this one considered one of the more tame attractions for family, even young children. That is what makes this deadly accident so terrifying. Overnight four people killed in an amusement park accident. Two men and two women died when a raft overturned on the thunder river rapids ride in Australia. The water ride malfunctioning, throwing people from the raft and trapping others underneath. One of the rides have sustained a -- some sort of malfunction causing two people to be ejected from a ride. Another two people were caught inside the ride. Reporter: Park workers rushing to help the injured. Horrified witnesses at the theme park describe the chaos after the incident. We just heard the guys in front of them flipped off and turned around and saw the whole thing flip over and heard everyone screaming. She came out hysterically crying and then two people that worked here took her away. Reporter: Normally the ride holds people inside a circular raft floating down a rapid river pulling the raft along a conveyer belt. Now investigators are trying to understand what caused the raft to flip over on the conveyer belt. Australia's prime minister speaking out about the tragedy. It is a very sad day and we trust that there will be a thorough investigation of the causes of this accident over the days that follow. Reporter: According to Australia media there were reports of problems with the ride earlier in the day. Investigators are going to be looking into that and pouring over security camera footage to figure out what went wrong. The park is closed. I would imagine that, okay, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.