A 42-year-old woman has been arrested by detectives investigating alleged corrupt payments to public officials.
The former public official was arrested at 6.10am today at her home in south London on suspicion of misconduct in public office, Scotland Yard said.
The arrest is the 85th made as part of Operation Elveden, Scotland Yard's investigation into claims that journalists paid public officials for information.
It is being run alongside two other inquiries – Operation Weeting, which looked at alleged phone hacking, and Operation Tuleta, examining claims of computer hacking and other privacy breaches.
Officers also arrested a 37-year-old man at the address on suspicion of possession of Class A drugs.
Both were taken to a south London police station for questioning.