Over 800 people were arrested in 16 countries.[18][19][20] Among the arrested people were alleged members of Australian-based Italian mafia, Albanian organised crime, outlaw motorcycle gangs, drug syndicates and other crime groups.[18][6][21] In the European Union, arrests were coordinated through Europol.[22] Arrests were also made in the United Kingdom, although the National Crime Agency was unwilling to provide details about the number arrested.[23]