From ABC Australia
Two men have been arrested by police in Sydney as part of an ongoing counter-terrorism operation.
The Australian Federal Police (AFP) said members of the Joint Counter Terrorism Team made the arrests with New South Wales Police as part of Operation Appleby.
Police will hold a press conference at 9:00am (AEDT) on the arrests.
Operation Appleby is a joint operation involving NSW Police, AFP and ASIO.
Prime Minister Tony Abbott yesterday warned of a heightened level of "terrorist chatter" in the aftermath of the Martin Place siege and reminded Australians that the national terrorism alert level remains on "high", which means an attack is "likely".
But the deputy chairman of Parliament's Joint Committee on Intelligence and Security, Anthony Byrne, has warned the terror alert level should be raised.
"On the basis of recent events both here in Australia and overseas, and provided information that the Prime Minister spoke about was sound and accurate, there is a strong case to raise the terror threat to extreme as quickly as possible," he told Fairfax media.
Raising the alert level to extreme would mean a "terrorist attack is imminent or has occurred".