Macau police have taken away businessman Alvin Chau for investigation, after a mainland court issued an arrest warrant for him over suspected cross-border illegal gambling activities.
The Macau government said in a statement that officers had taken Chau and other suspects to a police station on Saturday morning, based on evidence of previous criminal investgation.
It said it received notification from their mainland counterparts, accusing Chau of organising mainland citizens to gamble at a "cross-border gambling crime syndicate".
Chau is the founder and CEO of Suncity Group, which operates integrated resorts across Asia.
On Friday, a court in Wenzhou city, in Zhejiang province, issued the warrant, accusing Chau of leading a group to set up illegal casinos on the mainland that "seriously damaged social order".
The authorities alleged that as of July last year, the group had 199 shareholder representatives, more than 12,000 gambling agents and over 80,000 members in its network.