The Sandinistas forcefully took power in July 1979, ousting Somoza, and prompting the exodus of the majority of Nicaragua's middle class, wealthy landowners, and professionals, many of whom settled in the United States. The Carter administration decided to work with the new government, while attaching a provision for aid forfeiture if it was found to be assisting insurgencies in neighboring countries. Somoza fled the country and eventually ended up in Paraguay, where he was assassinated in September 1980, allegedly by members of the Argentinian Revolutionary Workers' Party.