The U.S. Justice Department announced Thursday the results of a months-long operation with the Federal Bureau of Investigation that actively disrupted the activities of the Hive ransomware group, which the agency says had targeted hospitals, schools, and banking in over 80 countries.

“Last night, the Justice Department dismantled an international ransomware network responsible for extorting and attempting to extort hundreds of millions of dollars from victims in the United States and around the world,” U.S. Attorney General Merrick B. Garland said in a statement.

The agency says the operation was coordinated with German and Dutch law enforcement, seizing control of the servers and websites used by Hive.