Here's the official statement from their website:

Thu, 15 Aug 2002
LEE RYAN STATEMENT
During a photoshoot yesterday afternoon (14th August 2002), Lee from Blue was involved in an accident at a go-karting track. Lee has suffered serious injuries to the skin on his chest and lower torso. Following initial treatment, Lee will be returning to hospital for further consultation with skin specialists later this week. A decision as to whether surgery is required will be made then. Doctors are optimistic of a speedy recovery.