The Staggers 17 December 2012 "Plebgate" returns as police officer is arrested Constable arrested on suspicion of leaking information about the incident to the press. Print HTML "You haven't heard the last of this," Andrew Mitchell told Downing Street police officers as he concluded his rant at them. It looks like the former chief whip was right. Last night it emerged that an officer with the diplomatic protection group has been arrested on suspicion of misconduct over the leak of information about the incident to the press. The constable was bailed on Sunday after his arrest the previous day and has been suspended from duty. The Met has been investigating for months how the Sun and the Daily Telegraph obtained the official police log of the incident, which suggested that Mitchell referred to the police as "plebs". In his resignation letter, Mitchell wrote that "The offending comment and the reason for my apology to the police was my parting remark 'I thought you guys were supposed to fucking help us'. It was obviously wrong of me to use such bad language and I am very sorry about it and grateful to the police officer for accepting my apology." Scotland Yard said that the officer arrested was not on duty at the time of the incident and that it had found "no evidence to suggest any of the officers involved in the incident were involved in the unauthorised release of information". John Tully, the chairman of the Metropolitan Police Federation, commented that it was "disappointing to say the least to see the Met take this action." The arrest has already revived the row over what Mitchell did or did not say. He told the BBC this morning: "I reiterate once again that the contents of the alleged police logbook are false." In which case, one might ask, will or should action be taken against the officer accused of falsifying the record? And if he did not, will Mitchell ever be forced to account for what he did say? › Morning Call: pick of the papers Former Conservative chief whip Andrew Mitchell, who resigned in October after swearing at Downing Street police officers. Photograph: Getty Images. George Eaton is political editor of the New Statesman. From only £1 a week Subscribe More Related articles How can Britain become a nation of homeowners? The Tories are the zombie party: with an ageing, falling membership, still they stagger on to victory Will George Osborne soften the tax credit cuts for low-earners?