"What they're trying to find out through this investigation is what government official broke the oath that they signed to protect classified information, " said Matthew Miller, who left the Justice Department in 2011 and is now a public affairs consultant in private practice.

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Here, they were called in to investigate bogus offshore insurance companies that sold bogus insurance policies to U.S. companies, and through that investigation stumbled on this mess.

FORBES: Broughton -- Rented Assets And Bogus Offshore Insurance Companies

Police had investigated the matter in 2006 but re-opened their probe at the beginning of this year after new information surfaced through civil lawsuits and an internal investigation at News International.

WSJ: Phone-Hacking Scandal Builds Momentum in U.K.

Out of all this they will be hoping to find one pearl which would drive the investigation forward through an identification and then hopefully towards getting hold of the individuals.

BBC: FBI releases photos of Boston suspects

Since these stories often have unintended consequences, we ask the media, particularly at this early stage of the investigation, to exercise caution and attempt to verify information through appropriate official channels before reporting.

NPR: Boston Official: Video Footage Shows Bomb Suspect

In a statement, Lancashire Police said they had searched offices in London in connection with an investigation, adding that they had "gone through all the appropriate and necessary procedures before taking this step".

BBC: Police search Commons office of MP Nigel Evans