Former Kilmarnock chairman Michael Johnston has resigned from his posts as a director at the club and as company secretary.

Johnston was chairman of the Rugby Park club from 2005 until 2015, a period that saw the club lift the League Cup in 2012, and had been on the club's board since 2002.

The lawyer, who split fan opinion during his time as figurehead at the club, said that he had taken the decision to retire from football following the recent death of his wife.

"It has been an honour to serve Kilmarnock FC in various capacities over the last fifteen years," Johnston told the club website.

"I have been fortunate to meet so many interesting people through football and greatly enjoyed serving on the Council of the Scottish FA for over ten years and the Board of the Scottish Premier League during the historic amalgamation with the Scottish Football League in 2013.

"There have been many challenges to confront along the way and these have taken their toll on not only me but also my family, to whom I extend my heartfelt thanks for their unqualified support.

"The recent loss of my wife Joanne, who was my greatest source of inspiration and encouragement at all times, has prompted my decision to retire from all active duties at the club and I look forward to attending Rugby Park as a committed supporter in future, unburdened of the worries of the past."