A coordinated effort between multiple agencies arrested suspects in Nigeria, the U.S. and eight other countries as well as seized nearly $3.7 million.

Federal authorities have arrested 281 people and seized nearly $3.7 million in a coordinated effort between multiple agencies to disrupt a massive email-fraud scheme.

Perpetrators of a global business email compromise (BEC) scheme were the target of a four-month investigation that began in May called Operation reWired, a coordinated effort by the U.S. Departments of Justice (DoJ), Homeland Security, Treasury, State and the U.S. Postal Inspection Service, working with local and state law-enforcement agencies.

In addition to the arrests and millions in repatriations, officials also seized money-mule warning letters and assets for a total of 214 domestic actions in the investigation, according to a DoJ press release.