The information relates to hacking at the News of the World in 2005, which led to its royal editor being jailed.
The BBC has learned the paper sacked former head of news Ian Edmondson on Tuesday following an internal inquiry.
A source said a trawl of his e-mails had found "highly damaging evidence" that had been passed to the police. ( According to Sky News, "sources said he had information about the claims that had not been passed on to senior management but this has not been confirmed.")
Mr Edmondson was suspended from active duties in December 2010 after he was identified in court documents as having instructed private investigator Glenn Mulcaire to access phone messages.
Mr Mulcaire was jailed for six months in 2007 alongside royal editor Clive Goodman, who got four months, for hacking into the mobile phones of royal aides.
The new inquiry will be moved from the Met Police's counter terrorism command to the specialist crime directorate.
It comes after the resignation last week of Prime Minister David Cameron's official spokesman Andy Coulson, who said the media storm surrounding ongoing hacking claims had distracted him from doing his job properly.
A series of inquiries and legal cases involving public figures is investigating just how widespread the practice was.
Overview of the phone hacking affair
This raises interesting questions about the ethics of journalism and the media in general.