Australia Thwarts 'Violent' Terror Plot, Arrests 15

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Police investigators search a garage at a home after about 800 federal and state police officers raided more than two dozen properties as part of an anti-terror operation, at Guildford, in suburban Sydney, Sept. 18, 2014.

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Police investigators search a home after about 800 federal and state police officers raided more than two dozen properties as part of an anti-terror operation, at Guildford, in suburban Sydney, Sept. 18, 2014.

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Police investigators search a home after about 800 federal and state police officers raided more than two dozen properties as part of an anti-terror operation, at Guildford in suburban Sydney, Australia, Sept. 18, 2014.

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Australian Federal Police Acting Commissioner Andrew Colvin (left) and New South Wales Police Commissioner Andrew Scipione (right) describe how 800 federal and state police officers raided more than two dozen properties as part of the anti-terror operation in Sydney, Sept. 18, 2104.