An investigation into a senior medical officer criticised by the Bristol inquiry has been completed - four months after he went on extended leave.The internal review into Dr Peter Doyle, a Department of Health official, began following the publication of the Kennedy report. It found that he had placed a dossier of evidence sent to him by Bristol whistleblower Dr Stephen Bolsin into a filing cabinet without reading it.The inquiry concluded that his actions had been 'seriously inappropriate'. Since then, Dr Doyle has been on extended leave. A spokesperson for the DoH said the results of the internal investigation will be sent to ministers and senior officials before a decision on possible disciplinary action is taken.