Andrew Mitchell 'pleb' row: Police officer arrested
A police constable with the diplomatic protection group has been arrested on suspicion of misconduct in a public office, Met Police say.
The officer was arrested late on Saturday and bailed on Sunday to return in January. He has been suspended.
The arrest was made by officers investigating how national newspapers came to publish police records of an incident at Downing Street involving ex-chief whip Andrew Mitchell.
The BBC's Political Correspondent Robin Brant has been speaking to presenter Chris Rogers on the BBC News Channel.