'Plebgate': Met Police make third arrest
Metropolitan Police detectives have arrested a police constable as part of the Andrew Mitchell "plebgate" inquiry.
The 46-year-old man was arrested on suspicion of misconduct in a public office and the unauthorised disclosure of information to the media.
Mr Mitchell quit as government chief whip after it was alleged he called Downing Street police "plebs", a claim he has always denied.
The BBC's June Kelly reports.