http://www.bbc.co.uk/news/uk-18437432
The arrests, made at 0600 BST, are part of Operation Elveden, which is running alongside a probe into phone hacking.
The 40-year-old ex-prison officer was arrested in Corby, Northamptonshire, on suspicion of corruption.
A 37-year-old woman was also arrested in Corby, and a 31-year-old man was arrested in Croydon, Surrey.
A former prison officer is among three people arrested by Metropolitan Police officers investigating alleged corrupt payments to public officials.
The 40-year-old ex-prison officer was arrested in Corby, Northamptonshire, on suspicion of corruption.
A 37-year-old woman was also arrested in Corby, and a 31-year-old man was arrested in Croydon, Surrey.
