SYDNEY， Oct. 26 (Xinhua) -- Australia's Dreamworld theme park on the Gold Coast will remained closed until investigators determines what caused the Thunder River Rapids water-raft ride to flip and kill four people on Tuesday.

Queensland police said on Wednesday said that a team of 30 investigators were currently investigating the matter to find out what caused the worst theme park disaster in Australian history.

The incident which occurred Tuesday afternoon had claimed the lives of Canberra-based brother and sister Luke Dorsett， Kate Goodchild， Dorsett's partner Roozi Araghi， and as well as Sydney-based mother Cindy Low， who was originally from New Zealand.

Queensland emergency workers said that the two children， a 10-year-old boy and a 12-year-old girl， who were also on the ride with their mothers had miraculously escaped serious injuries and are currently recuperating in hospital.

The surviving boy is the son of Low， while the surviving girl is the daughter of Goodchild.

Dreamworld chief executive Craig Davidson told a media conference that the company would support the two young children into the future without giving much details.

""In paying our respects today (Wednesday)， I also want to specifically acknowledge the event on the two children who were involved in the tragedy，"" Davidson said.

""These children will have our full support into the future，"" he said.

Meanwhile， law firm Maurice Blackburn lawyer Alison Barrett told the Australian Associated Press that Dreamworld could potentially be facing 3 million Australian dollars (2.31 million U.S. dollars) in fines over the incident and individuals 600，000 Australian dollars (460，000 U.S. dollars) fines and up to five years jail.

Barrett said the immediate focus would be on the victims' families， but support will also be needed for the many people who witnessed the incident.

For the 201516 financial period， Dreamworld had more than 2.4 million visitors， the company report revealed in August.

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ANKARA Tyler Higbee Rams Jersey , July 31 (Xinhua) -- As Turkish citizens living overseas began voting for the presidential elections scheduled for August 10, Prime Minister Recep Tayyip Erdogan, the ruling party candidate, maintains his lead among all three candidates running.

But it's not clear whether Erdogan will be able to claim a victory in the first round according to polls, leaving the decisive race for the run-off elections to be held in two weeks.

Ekmeleddin Ihsanoglu, Erdogan's main challenger, is the former head of the Organization for Islamic Cooperation (OIC) who has a long career as diplomat and has earned international recognition.

Ihsanoglu has been endorsed by around a dozen political parties including the main opposition Republican Peoples' Party (CHP) and the third largest political party, Nationalist Movement Party (MHP) , which is not well-known in Turkey.

The opposition candidate has been trying to make inroads in the election campaign through town-hall meetings, TV appearances and advertisement campaigning.

According to a June survey done by MetroPOLL, an Ankara-based polling firm, around 42 percent of people said that they will vote for Erdogan, while around 33 percent said that they will vote for Ihsanoglu.

Some seven percent said they will vote for Kurdish candidate Selahattin Demirtas who many believe doesn't have a real shot at the presidency. TURNOUT AND UNDECIDED VOTERS ARE KEY

Undecided voters and reluctant voters are the key to winning the ticket. Some 12 percent of voters said they will not vote at all, in addition to 6.3 percent of the voters who say they have no idea who they will vote for.

According to professor Ozer Sencar, the owner of MetroPOLL, if neither the undecided nor reluctant voters participate in the elections, Erdogan will guarantee a win for presidency.

But "If all those people vote, their choices will significantly influence the result," he added.

Yavuz Baydar, political analyst, also agreed with the view that undecided voters will play significant role on how the elections will be decided.

"The gap between Erdogan and Ihsanoglu seems far too wide, and the high number of undecided voters has caused concern within the opposition camp, raising fears of a low turnout," he said.

If Erdogan wins in the first round with less than 55 percent, he would have difficulty in controlling the ruling Justice and Development Party (AKP) government. He needs to get more than 55 percent to claim a strong presidency.

"Any vote achieved that comes close to the historic backing for the referendum in September 2010 could be a game-changer in Turkish politics," Baydar commented. In the referendum, Erdogan government scored 58 percent.

In the first round of elections to be held on Aug. 10, a candidate must win by a count of at least 50-plus-one votes. In the second round, scheduled for Aug. 24, this threshold is not required. ERDOGAN SUFFERS SETBACKS

But Erdogan's image as strong leader in Turkey has been tarnished recently by the graft scanda. Four ministers in his government were forced to resign and a parliamentary investigation commission was set up to probe claims.

He also suffered a setback last year with wide spread anti- government protests in Turkey.

"Erdogan needs to escape from the corruption investigation," said Mumtazer Turkone, professor of political science.

"While we may be aware that the office of the president is an escape route for Erdogan, it in no way means we can be sure of the election results," he cautioned.

According to the constitution, the president can only be tried for crimes of high treason. He has full immunity from prosecution for any other crimes.

Erdogan has also entertained the idea of changing Turkish parliamentary system to a presidential one if he gets elected, transferring all the executive powers to presid.