A teenager has been charged with planning an IS-inspired terror plot in Australia on next week's Anzac Day.
Sevdet Besim was one of five teenagers arrested over the foiled plot which he allegedly planned to carry out during an event to mark the centenary of the landings at Gallipoli in WWI.
Police in Melbourne have released three of the teens while one remains in custody.
Besim was refused bail and will appear in court on Friday, Australian media reported.
The Metropolitan Police are reviewing their security plans for Anzac day events in the UK following a string of counter-terrorism arrests in Australia.
Deputy Assistant Commissioner Neil Basu said the move was a "sensible precaution" to ensure ensure the events are "safe and secure for the public and police officers".
"While there is no information to suggest a specific threat to related events in the UK - and the current UK threat level remains unchanged - the public should remain vigilant," he said.
Prince Harry has completed the first two weeks of an attachment with the Australian army, as his British military career nears its end.
Harry has been participating in day-to-day soldiering activitis and physical training alongside the 1st Brigade, and has also undergone flight simulation training.
His attachment has also included time in an armed reconnaissance helicopter, and after meeting with wounded and, injured and ill soldiers he joined in a game of wheelchair Australian Football League.
He also met with members of the Wuggubun community during time on duty with the North-West Mobile Force in western Australia.
Harry, a captain in the Army, will continue his four-week attachment with the Australian Defence Force after Gallipoli commemorations in Turkey, before leaving the British military after ten years' service.
Australian Prime Minister Tony Abbott has said that an "Isis-inspired terror plot" was believed to involve "attacks against police officers on Anzac Day".
He said: "There were a series of raids in metropolitan Melbourne. Five people were arrested. We are expecting three to be charged. Two will be charged with preparing a terrorist act. The act that we believe was in preparation involved attacks against police officers on Anzac Day."
Five teenagers have been arrested in Australia over an alleged Islamic State-inspired plot to attack an event in Melbourne to mark the centenary of Anzac Day, Australian police said.
Two suspects, both 18, are accused of preparing to attack the event, which included targeting police officers.
Another 18-year-old was arrested on weapons charges and two other men, aged 18 and 19, were in custody and assisting police, police said.
Officers said the alleged plot was inspired by the Islamic State terror group and was to have involved "edged weapons", although there was currently no information to suggest that it was a "planned beheading".
The arrests follow a major counter-terror operation on Saturday, involving some 200 officers in the city.
Anzac stands for the Australian and New Zealand Army Corps, and commemorates the First World War battle in Turkey on April 25.
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An court in Indonesia has rejected a last-ditch challenges by Australian Andrew Chan and Myuran Sukumaran, who are facing execution by fire squad over drug smuggling.
In 2006, the pair were convicted of ringleading a plot to smuggle heroin out of Indonesia.
Their lawyer says they will file a legal challenge to the Indonesian Constitutional Court in the hopes of delaying their execution.
"We will continue our legal efforts," lawyer Leonard Arpan told reporters shortly after an Indonesian court rejected an appeal against the president's decision to refuse them clemency.
The attorney general's office has said there were no further legal avenues to avoid the death penalty after today's decision.
Prince Harry made one young fan's day when he high-fived him for bringing a banner which read: "Redheads RULE!" as he landed in Australia.
The prince arrived in Canberra to launch his four-week attachment with the Australian Defence Force, before leaving his post with the British Army in June.
Hundreds of people braved the wet weather and lined the streets to catch a glimpse of the royal - including 12-year-old Ethan Toscan.
According to fellow ginger Ethan, the prince told him that being a redhead "has to be the number one thing one person can ever be".
He said that I was fabulous in making the sign and it's awesome to be a redhead.
I'm over the moon - it's just wow! I got to shake his hand."
However, the prince was less impressed with a teenage admirer who tried to snap a selfie with him - jokingly telling her: "Seriously, you need to get out of it. I know you're young, but selfies are bad."