The Peruvian diplomat, Rafael Roncagliolo, also called on the Union of South American Nations, of which his country is acting president, to issue a statement urging Maduro to exercise tolerance.
Maduro said yesterday that Roncagliolo's statement showed a "lack of respect" for Venezuelan democracy.
Two Venezuelan opposition leaders were in Lima this week to brief officials about a fistfight in Venezuela's parliament that broke out after its speaker tried to bar opposition lawmakers unless they recognize Maduro's election. The opposition claims it was attacked.