[Suncity shares slide further after Macau gaming rooms shut] Shares in Macau’s Suncity Group Holdings Ltd (1383.HK) tumbled in resumed trade on Thursday after gaming rooms linked to the group were shut following the arrest of its former CEO and chair, Alvin Chau. Chau, also the founder of Macau’s biggest junket operator which brings in high rollers to play at casinos, was arrested with 10 others on Sunday over alleged links to cross-border gambling and money laundering. In a statement released late on Wednesday, Suncity said that gaming rooms operated by a business wholly owned by Chau had closed as…