澳大利亚悉尼歌剧院被警方封锁，部分渡轮服务也被取消。
《路透社》引述澳洲警方的话说，警方正在歌剧院展开行动，并疏散周围的人，但没有透露细节，至少一趟渡轮服务也受影响而被取消。
A police operation that evacuated the Sydney Opera House was sparked by “information on social media”.
Police ran operations at the Opera House and in the beachside suburb of Manly on Thursday, but did not provide details on the nature of the threat.
Helicopter shots showed the usually crowded hub completely deserted and afternoon concerts were cancelled.
Police issued a release at 15:30 AEST (04:30GMT) saying that both operations had concluded.
The operation resulted in the cancellation of one ferry service between Manly and Circular Quay.