John Podesta, who ran the unsuccessful election campaign for Hillary Clinton tweeted: "Stay tuned for big announcement tomorrow #TheTruthIsOutThere."

He was referring to the launch of a new project by former Blink 182 frontman Tom DeLonge, involving a series of former senior CIA and military officials, as reported by Express.co.uk yesterday.

Steve Bassett, head of the Paradigm Research Group (PRG) which campaigns for the end of an alleged "truth embargo", could not contain his excitement.

He retweeted Mr Podesta, saying: "Is the circle about to close tomorrow? From this to this: #disclosure."

He later added: "I do not think the truth embargo can withstand this manoeuvre. We are on the threshold."