Detectives investigating phone hacking at the News of the World have arrested a 35-year-old man.
Officers from Scotland Yard's Operation Weeting held the man in a pre-dawn swoop on his home.
He was taken to a north London police station for questioning on suspicion of conspiracy to intercept voicemail messages.
The man, who has not been named, was held by police at 5.55am.
He is the 16th suspect arrested on suspicion of phone hacking since Operation Weeting, Scotland Yard's fresh investigation into the illegal interception of voicemails, was launched in January.
A series of high-profile figures have been held for questioning, including former News International chief executive Rebekah Brooks and ex-Downing Street communications chief Andy Coulson.
The scandal has already led to the closure of the News of the World after 168 years and the resignation of Metropolitan Police Commissioner Sir Paul Stephenson and Assistant Commissioner John Yates.