The upcoming VJ Day, which this Sunday will mark 70 years since Japanese Emperor Hirohito announced his country's surrender to the Allies in 1945, has been marred by rumors of a planned attempt on Queen Elizabeth II’s life.

The Daily Mail revealed on Sunday sources said a specific threat had been made against the queen. The assassination plot was being orchestrated from Syria by Islamic State members who are planning to explode a "pressure cooker bomb" in central London during the VJ Day events. The explosive device is assumed to be similar to the one used in the 2013 Boston Marathon bombing.

The Daily Mail has informed senior members of Scotland Yard’s Royal Protection branch of the threat and reported as of Sunday no arrests had been made.

Despite the news of the planned attack, the Metropolitan Police have encouraged people to go on with their regular plans to attend the VJ Day celebration. As reported in the Mirror, Metropolitan Police spokesman said, "While the U.K. threat level from international terrorism remains severe, we would like to reassure the public that we constantly review security plans for public events, taking into account specific intelligence and the wider threat.”

The spokesman made it clear that Scotland Yard was busy investigating terror threats coming from the United Kingdom and elsewhere. 

"The police have for some time recognised, and spoken about, the fact that the fight against terrorism has a number of challenges," he said, pointing out examples such as "the real threat from nationals returning as trained terrorists from Syria and Iraq; the equal threat of those who have not travelled being encouraged and incited to commit attacks in the U.K. and the young and vulnerable being enticed out to Syria through Internet based grooming.”