"They are no longer recognized as representatives of Venezuela in Costa Rica, and therefore, do not enjoy immunities and privileges," the Foreign Ministry press release reads.
While Maduro pointed the finger at Washington for a multi-day blackout in Venezuela, critics have long blamed the government for failing to maintain the power grid.
Sanctions have worsened Venezuela's crippling economic and political crisis, the UN human rights chief said Wednesday, as Washington warned it may expand measures targeting President Nicoolás Maduro's government.
Venezuela's opposition leader Juan Guaidó was cheered by thousands of flag-waving supporters chanting "Yes, you can!" as he returned to Caracas on Monday, defying the threat of arrest by embattled President Nicolás Maduro's regime.
Venezuela's opposition leader Juan Guaidó called for mass protests across the country against President Nicolás Maduro on Monday as he announced his return after a week touring Latin American allies.
