During a visit to Afghanistan, Mr Cameron was asked in interviews if Mr Mitchell could make a comeback.
"One step at a time. Let's get to the truth about what happened,"
"But I think it has been an extraordinary development, frankly, to find a police officer apparently posing as a member of the public, pretending to have been outside Downing Street at the time and then trying to blacken the name of a Cabinet minister."
A report out today says David Cameron brought in the the wrong person to investigate 'Plebgate'.
Andrew Mitchell has written a piece in which he has accused the police of trying to destroy his career in a smear campaign.
A police officer who claimed to have witnessed Andrew Mitchell's 'rant' at Downing Street is being investigated by the police watchdog.