Lee was arrested and bailed on suspicion of match-fixing on 11 February 2010. This followed a police investigation into suspicious betting patterns relating to a match played in 2009, believed to have taken place at the 2009 UK Championship. On 2 October 2012, the World Professional Billiards and Snooker Association (WPBSA) released a statement confirming that the Crown Prosecution Service would not be taking further action against Lee over the claims. A week later, on the 11th, Lee was involved in another controversial match which resulted in a 2–4 defeat by John Higgins at a Premier League fixture, having previously led 2–1, which caused fellow professional Judd Trump to question the integrity of the result on Twitter, especially since Lee squandered a golden opportunity to level the match at 3 frames all. The following day—on his 38th birthday—Lee was suspended by the WPBSA following reports by at least two bookmakers of irregular betting patterns connected to the Premier League match, pending a full inquiry. Lee appealed against the decision made by the Chairman of the WPBSA; Robert Englehart QC—appointed by Sport Resolutions UK to consider Lee's appeal against suspension—dismissed it, deciding the suspension should remain in place until either the conclusion of the investigation or any resultant hearings.