The Australian duo of Steve Smith and David Warner "got away with murder" and should have been banned for two years for their roles in the ball-tempering scandal, feels West Indies pace legend Curtly Ambrose.

Former captain Smith and his deputy Warner were handed a one-year ban by Cricket Australia for their role in trying to rough up one side of the ball with sandpaper during the third Test against South Africa at Cape Town in March last year. The duo are currently playing in the Indian Premier League after their ban period ended on March 29.