Former News International chief executive Rebekah Brooks has been arrested in connection with an investigation into phone hacking and bribery.
The 43-year-old was arrested by appointment by Operation Weeting police at a London police station.
Met Police said she is currently still in custody.
This is the 10th arrest made by police investigating hacking allegations by the News of the World newspaper.
She was arrested on suspicion of conspiring to intercept communications and on suspicion of corruption allegations.
The Operation Weeting team is conducting the current investigation into phone hacking.
Officers from Operation Elveden were also involved with the arrest. They are investigating allegations of inappropriate payments to police, an inquiry which is being supervised by the Independent Police Complaints Commission.