Cambodia has extradited Chinese billionaire Chen Zhi to China over allegations he led a vast cybercrime and cryptocurrency scam network worth billions of dollars. Authorities say Chen, founder of the Prince Group, operated online fraud schemes, illegal gambling and money-laundering operations targeting victims worldwide. His Cambodian citizenship was revoked before the extradition. Chinese officials called the transfer a major breakthrough in cross-border law enforcement against large-scale online scams operating across Southeast Asia.