Metropolitan Police on Operation Elveden have arrested a 40-year-old prison officer in Kent.
The arrest was made after information was passed to police from a News Corporation management standards meeting.
More top news
Ed Miliband has said he is willing to take part in a TV debate with David Cameron 'anytime, any place, anywhere'.
Swansea striker Bafetimbi Gomis has been stretchered off the pitch after collapsing during his side's clash with Spurs at White Hart Lane.
ITV News has obtained a video statement made by a former Royal Marine who was later killed fighting against Islamic State in Syria.