SkyCity has been criticised by a senior judge after a drug ring used its VIP gaming lounge as part of its multi-million operation, but the casino company defended its systems for detecting illegal activities. Drug gang ringleader Ro Tong Zhou, 41, was jailed for 15 years in the High Court in Auckland yesterday on more than 30 methamphetamine drugs charges. He used SkyCity Casino's VIP lounge to run the operation, which included the supply of more than NZD 3 million worth of P in two months.