A former healthcare worker has been arrested by detectives investigating alleged corrupt payments to public officials, Scotland Yard said.
The 59-year-old man was held at his home in the Knowsley area of Merseyside on suspicion of misconduct in a public office, corruption and conspiracy to commit both those offences.
He is being questioned at a police station in Merseyside and his home is being searched.
The arrest is a result of information given to police by News Corporation's Management and Standards Committee.
It brings the number of people detained under Operation Elveden, the investigation into inappropriate payments, to 57.