Flores, a regional commander who controlled large portions of CJNG territory along Mexico’s Pacific coast, had been viewed by security analysts as a potential successor to cartel leader Nemesio Oseguera, known as “El Mencho,” following Oseguera’s death in a security operation in February.Garcia Harfuch said on social media platform X that Flores was detained under a Mexican arrest warrant and also faced criminal charges in the United States.

“He is also wanted by U.S. authorities for extradition. The U.S. government had offered a $5 million reward for his capture,” Garcia Harfuch wrote.The U.S. Treasury Department previously identified Flores as a “significant foreign narcotics trafficker” and said that a U.S. grand jury in 2021 charged him with conspiracy to distribute cocaine and heroin, among other offenses.

CJNG is one of Mexico’s most powerful and violent criminal organizations, with operations spanning drug trafficking, extortion and territorial control across several states. The cartel has long been a major target of both Mexican and U.S. authorities.

Carlos Olivo, a former U.S. Drug Enforcement Administration assistant special agent in charge and an expert on CJNG, said Flores’ arrest could have a deeper operational impact than the earlier killing of El Mencho.“He’s a significant figure,” Olivo said. “His arrest will have a bigger effect on CJNG operations than Mencho being taken out.”The detention is the latest development in a broader campaign against Mexico’s drug cartels under intensified federal security operations.

Garcia Harfuch has made the dismantling of CJNG leadership a priority and previously blamed El Mencho for a 2020 assassination attempt against him in which two of his bodyguards were killed.Security analysts had identified Flores as one of several senior regional commanders positioned to compete for control of the cartel after leadership disruptions earlier this year.

Mexico’s security environment remains under heightened international attention as the country prepares to co-host the FIFA World Cup this summer with the United States and Canada, placing additional pressure on authorities to demonstrate progress against organized crime and violence.

Li, a former chairman of the board at Huione Pay, is accused of being a core member of a criminal syndicate linked to Chinese-Cambodian businessman Chen Zhi, according to Chinese state broadcaster CCTV.

Chen was extradited to China in January and is currently in detention, authorities said.The case is part of a broader international crackdown on transnational fraud networks operating across Southeast Asia.

The United States said last October that it and the United Kingdom had taken action against Chen’s Prince Group, describing it as a criminal enterprise involved in online investment scams. U.S. authorities also accused the Huione Group of laundering proceeds from such schemes, as well as cyber heists linked to North Korea.

According to the Financial Crimes Enforcement Network, the Huione Group allegedly laundered at least $4 billion in illicit proceeds between August 2021 and January 2025.

Reuters could not seek comment from Huione, which has since been dissolved. A U.S.-based representative for Prince Group did not immediately respond to requests for comment outside business hours.

Cambodian government spokesperson Touch Sokhak said China had sent experts to assist local authorities in the investigation, which ultimately led to Li’s arrest and extradition.

“This shows Cambodia’s will to clear out online scams and that Cambodia is not a safe haven for scam criminals,” Sokhak said.

China’s foreign ministry spokesperson Mao Ning said Beijing would continue to work with Cambodia to combat cross-border telecommunications fraud, highlighting deepening cooperation between the two countries in tackling organised financial crime.