REPUBLIKA.CO.ID, SYDNEY -- Australian police locked down the center of the country's biggest city on Monday after an armed man walked into a downtown Sydney cafe, took hostages and forced them to display an Islamic flag, igniting fears of a jihadist attack.
Police said they knew of one armed assailant involved in the incident at the Lindt chocolate cafe in the heart of Sydney's financial district, but there could be more. Police, including paramilitary officers, cordoned off several blocks around the cafe as negotiators tried to defuse one of the biggest security scares in Australia for decades. Snipers and a SWAT team took up positions around the cafe and police helicopters flew overhead.
At least five hostages have been released or escaped since the mid-morning siege began, with panicked cafe workers and customers seen running into the arms of paramilitary police. It was not clear how many more hostages remained in the cafe but the number was not as high as the 30-40 that had been reported earlier, police said.
Prime Minister Tony Abbott, who has warned of militant plans to strike Australian targets, said there were indications the hostage-taking was politically motivated.
"This is a very disturbing incident. I can understand the concerns and anxieties of the Australian people," Abbott told reporters in Canberra, without providing any information on the siege.
Australia, a staunch ally of the United States and its escalating action against the Islamic State in Syria and Iraq, is on high alert for attacks by home-grown militants returning from fighting in the Middle East.
"We have moved to a footing that would be consistent with a terrorist event," Andrew Scipione, police commissioner for the state of New South Wales, told reporters.
The cafe was opposite a commercial television studio and footage earlier showed several people inside the cafe standing with their hands pressed against the windows. Pictures showed a black and white flag displaying the Shahada - a testament to the faith of Muslims which is declaring belief in the oneness of God and the acceptance of Mohammad as God's prophet. The flag has been popular among Sunni Islamist militant groups such as Islamic State and al Qaeda.
The incident forced the evacuation of nearby buildings in Sydney's central business district and sent shockwaves around a country where many people have started to turn their attention to the Christmas holiday following earlier security scares.
In September, anti-terrorism police said they had thwarted an imminent threat to behead a random member of the public and days later, a teenager in the city of Melbourne was shot dead after attacking two anti-terrorism officers with a knife.
Evacuating by ladder
Dozens of armed police surrounded the cafe in Martin Place after the siege began around 9:45 am (22:45 GMT on Sunday). The area is home to the Reserve Bank of Australia, commercial banks and close to the New South Wales state parliament.
"I walked up to the door and then everyone was sitting down and the door's locked which is pretty weird because it's never locked and there was one guy walking around with a hat and a beard," a man who identified himself as Bruno, a worker at the cafe, told the Australian Broadcasting Corp, referring to the suspected assailant. He said he then turned away.
Lindt Australia Chief Executive Steve Loane told Sky Business there were about 10 staff at the cafe and "probably 30 customers" although he said that was an estimate.
The Reserve Bank of Australia said staff had been locked down inside the building and were all safe.
The nearby US consulate was also evacuated, according to an embassy spokeswoman, along with the Sydney Opera House. Tourists were being let back into the world-famous venue by early afternoon.
Bank and shop close
In the biggest security operation in Sydney since a bombing at the Hilton Hotel killed two people in 1978, major banks closed their offices in the central business district and people were told to avoid the area, leaving large parts of the area all but deserted by mid-afternoon.
Traders in currency markets said the hostage news may have contributed to a dip in the Australian dollar, which was already under pressure from global risk aversion as oil prices fell anew.
Ray Hadley, a radio disc jockey, said he had been contacted by a hostage and could hear the suspected gunman issuing orders in the background. Police declined to comment.
Network 10 reported that two female hostages had called with claims from the gunman that two bombs were planted elsewhere in the city. Social media posts by alleged hostages claimed the gunman wanted to speak directly with Prime Minister Abbott.
Police said they were aware of media reports but said the "situation is contained in one area".
Concerns about an attack in Australia by Islamists have been growing for more than a year, with the security agency raising its national terrorism public alert to "high" in September. That month, a spokesman for the Islamic State urged supporters in Western nations, including Australia, to attack civilians or military personnel at home.
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