However, Paul Rooney, a former procurator fiscal depute and chairman of Strathclyde Police Board, denied knowing Mr Purcell was questioned about cocaine use and blackmail risk.
The favourite to be the next leader of Glasgow City Council has admitted knowing almost a year ago that disgraced former boss Steven Purcell was questioned by drugs police.
However, Paul Rooney, a former procurator fiscal depute and chairman of Strathclyde Police Board, denied knowing Mr Purcell was questioned about cocaine use and blackmail risk.