British police helped Australian officials foil a suspected Lee Rigby-style terror attack on police during First World War commemorations, it emerged today. A 14-year-old boy from Blackburn, Lancashire was arrested after he allegedly communicated with Australian men over a plan to use knives and swords to hack officers to death in Melbourne on Anzac Day, which takes place this Saturday. When the alleged plot was uncovered by Greater Manchester Police, they tipped off Australian authorities who swooped on the terror suspects, arresting five men over the weekend. Police are now working to shore up security for a string of Anzac Day events taking place in London, including services at the Cenotaph and Westminster Abbey to be attended by the Queen, Prince Philip and Prince William. Scroll down for video . Arrest: Police have arrested a 14-year-old on suspicion of helping to plot a terror attack in Australia (file photo) Greater Manchester Police said today that the 14-year-old was first arrested on April 2 after police intercepted communications between him and an Australian man, allegedly relating to a planned terrorist attack. He was then re-arrested on Saturday on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism, and is currently being questioned by police in custody. Five men from Melbourne were arrested over the planned attack after British authorities passed on their findings to police in Australia, and on Saturday 18-year-old Sevdet Besim was charged with terror offences. It was claimed today that the Australian men planned to knock over a policeman with a car then stab him to death, in a chilling echo of the murder of British soldier Lee Rigby two years ago. A security official told ABC that the terrorists then planned steal the dead officer's gun and go on a shooting rampage which would not end until they were shot dead themselves. The alleged plot is similar to the killing of Fusilier Rigby, who was run over by Muslim converts Michael Adebolajo and Michael Adebowale outside his barracks in Woolwich before they attacked him with knives and attempted to behead him. Attack: Sevdet Besim, pictured, has been charged with planning an attack in Melbourne on Anzac Day . Arrest: A suburban house in Melbourne where one of the alleged terrorist plotters was arrested on Saturday . Tony Mole, from the North-West Counter-Terrorism Unit, said today: 'We have uncovered communication between an individual in the North West and a man in Australia to what we believe is a credible terrorist threat. 'As soon as this information came to light we acted quickly with the relevant authorities here and abroad and this has resulted with officers from the NWCTU arresting a teenager. 'The nature of the communication is currently under full assessment and subject to investigation. 'We are continuing to work closely with the police in Australia and Lancashire and I want to reassure the public that we have not uncovered an imminent attack in the UK and there is no immediate threat towards the communities of Lancashire, the North-West and the UK.' Australian Federal Police said: 'Victoria Police and the Australian Federal Police can confirm a link between the arrest of a 14-year-old boy in Blackburn, Lancashire in the United Kingdom on Saturday with Operation Rising, a joint Counter Terrorism Team operation. 'The nature of the communication will form part of the investigation and therefore it would not be appropriate to comment further.' In the wake of the Melbourne arrests, Australian officials have ramped up security for Anzac Day events, while police in Britain  are reviewing the arrangements for Anzac Day celebrations in the UK. This year's commemorations are considered particularly significant, as April 25 marks the 100th anniversary of the start of the ill-fated Gallipoli campaign, which led to the deaths of 11,500 troops from Australia and New Zealand. Horrors: Soldiers pictured during the Gallipoli campaign, which left thousands of Allied troops dead . Commemoration: The Queen and the Duke of Edinburgh pictured laying a wreath at the Cenotaph in 1990, the 75th anniversary of the campaign; they are set to do the same during a ceremony on Saturday . London is hosting three commemorative ceremonies on Saturday - a dawn service at Hyde Park Corner, a wreath-laying ceremony at the Cenotaph on Whitehall and a service of thanksgiving at Westminster Abbey. The Queen and the Duke of Edinburgh are due to attend the services at the Cenotaph and Westminster Abbey, while the Duke of Cambridge will join them at the Cenotaph and Princess Anne will attend the dawn service. Security is already set to be high at all three events, with those attending told to carry photographic ID, but it could be ramped up further after the recent terror arrests. Deputy Assistant Commissioner Neil Basu of the Metropolitan Police said over the weekend: 'Following counter-terrorism arrests in Australia this weekend and allegations of attack planning against Anzac Day commemorations and police officers in Australia, we are reviewing security plans at related events in the UK. 'We already have protective security plans in place for major Anzac events in the UK but as a sensible precaution all forces have been asked to review security arrangements at related events to ensure they are safe and secure for the public and 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.' At least 50 events commemorating Anzac Day are set to take place in other parts of the UK this weekend, including services at Manchester Cathedral, Winchester Cathedral and Oxford University. Australian police said on Saturday that Sevdet Besim and another 18-year-old were planning to use 'edged weapons' to attack officers in Melbourne while Anzac Day celebrations are taking place. The teenagers were said to be inspired by Islamic extremist Numan Haider, who was shot dead by police in September last year after he attacked officers with a knife outside a Melbourne police station. Like Britain, Australia has been suffering from an apparent upsurge in would-be jihadists as the rise of ISIS has attracted young Australians to fight in the Middle East and plot terror attacks at home. 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British teenager arrested on suspicion of helping to plot a terror attack on Anzac Day commemorations .
The 14-year-old allegedly communicated with an Australian man over plot .
Five men arrested by Australian police after tip-off from UK officials .
Police are reviewing security arrangements for Anzac Day events in Britain .