Mexico's President Andres Manuel Lopez Obrador said on Wednesday there was no evidence of fraud in an election that Venezuelan President Nicolas Maduro claims he won but which the opposition contests and has sparked nationwide protests.

Lopez Obrador also reinstated his call for transparency and called on the Venezuelan electoral body to show evidence and make public all the voting tallies from Sunday's elections.

"I have no proof, there is no evidence in the case of Venezuela," the president said during his daily press conference, answering a question about potential fraud in Venezuela's election.

He also said Mexico will not participate in an emergency meeting of the Organization of American States (OAS) permanent council scheduled for Wednesday after nine Latin American governments have called for one.

"We do not agree with the OAS' biased attitude," he said during the conference, saying the organization acknowledged the victory of Venezuelan opposition candidate too soon.

The Mexican president said earlier this week he would wait for Venezuela's election results to be reported fully before he recognized a winner.

Other countries and international organizations have expressed concerns about Sunday's election, while Lopez Obrador called for them to refrain from intervening in Venezuela.