London: A journalist of the Press Association wire agency was arrested on Monday by police probing allegations of voicemail hacking at the Rupert Murdoch-owned News of the World tabloid.
The woman was arrested by appointment when she reported to a police station in central London.
The Press Association, a national agency which provides news to all of the major media organisations, confirmed that one of its journalists had been arrested but gave no further details.
Scotland Yard said the woman was being held for questioning by detectives assigned to Operation Weeting, a new investigation into phone hacking launched earlier this year following a stream of fresh allegations.
Another reporter was arrested last week in West Yorkshire on suspicion of conspiring to intercept mobile phone voicemail messages. She was reportedly a freelance journalist.
Three News of the World journalists have been arrested since the new inquiry was launched into the phone hacking allegations involving Britain`s top-selling Sunday title, which has a reputation for show business scoops and sex scandals.
In the original investigation, the paper`s former royal reporter Clive Goodman and private detective Glenn Mulcaire were jailed in 2007 for intercepting voicemail messages from members of the royal family, including Princes William and Harry.
In April, the newspaper admitted liability in several civil cases.
Football pundit Andy Gray this week became the latest celebrity to settle with the paper`s publishers, accepting GBP 20,000 in damages for having his voicemail intercepted.
The News of the World`s owners reached a similar agreement with the actress Sienna Miller, who received GBP 100,000 in damages.
Other high-profile figures who suspect their phone messages were intercepted and have launched legal action include actor Jude Law, Manchester United footballer Ryan Giggs and politicians John Prescott and George Galloway.