Velvet Revolver guitarist Slash has been caught breaking a smoking ban in Wales by lighting up on stage during a concert in the capital Cardiff. The rocker and his bandmate Scott Weiland smoked cigarettes during Thursday's (07Jun07) gig at the Cardiff International Arena. A spokeswoman for Cardiff council vowed to investigate the incident, saying, "The no-smoking ban seems to be operating well in Cardiff so we are disappointed to hear that there may have been an incident of someone smoking on the stage at the CIA. "We have yet to receive any formal complaints but we will be investigating the matter and arranging to meet with the management of the CIA urgently to explain that this kind of behaviour is not acceptable as well as seeking assurances that this will not happen again."