The hacking story just keeps on giving.
BBC News has reported that a police officer has been arrested in relation to leaks during the Scotland Yard phone-hacking investigation.
Sky News is reporting that the leak involves the Guardian which has led the way on the hacking story.
The 51-year-old detective constable was arrested at work on Thursday and has been released on bail until 29 September. He has also been suspended.
The Met's Deputy Assistant Commissioner Sue Akers said the officer's arrest was "hugely disappointing".
She said: "I made it very clear when I took on this investigation the need for operational and information security. It is hugely disappointing that this may not have been adhered to.
"The MPS (Metropolitan Police Service) takes the unauthorised disclosure of information extremely seriously and has acted swiftly in making these arrests."
MediaGuardian reports that a spokesperson for Guardian News & Media, which publishes the Guardian, declined to comment on reports that the leaks had been to the Guardian, and said: "We note the arrest of a Scotland Yard detective on suspicion of misconduct in a public office relating to unauthorised disclosure of information.
"On the broader point raised by the arrest, journalists would no doubt be concerned if conversations between off-the-record sources and reporters came routinely to be regarded as criminal activity. In common with all news organisations we have no comment to make on the sources of our journalism."