Defeated Bolivian challenger rejects election result as 'fraud'

The October 20 election sparked riots and protests after a sudden change in the ballot count extended Morales's lead over Mesa, helping the incumbent achieve the 10-point margin needed for an outright first-round victory.

Mesa read a statement to reporters, saying he "rejected and ignored the closure of the national count of the general elections... because it is the result of fraud and a breach of the popular will."

With all the votes counted, the Supreme Electoral Tribunal (TSE) gave Morales 47.08 percent and Mesa 36.5 percent -- just enough of a margin of victory to avoid a second-round runoff.

Fresh clashes between rival groups broke out on Friday, while pro-Mesa protesters draped in Bolivia's red, yellow and green flag blocked roads in La Paz with barricades of tires, rope and trash cans.

Backed by a collective of centrist and right-wing parties, former president Mesa (2003-05) has called on his supporters to maintain street protests.

Calls for a runoff

The official result means Morales, who turned 60 on Saturday, has won a fourth successive term despite the constitution he promulgated in 2009 limiting presidents to two mandates. The country's highest court, considered friendly to Morales, overturned the term-limit rule.

Morales on Saturday said he would be happy to contest a second round if there was any evidence of graft.

"If there is fraud, the next day we call the second round," he said.

On Thursday, the European Union, the United States, Brazil, Argentina and Colombia called for a second-round runoff to restore trust and confidence in the electoral process.

The Organization of American States (OAS) had already expressed "surprise" and "concern" over the sudden shift in official tallies, which increased Morales's lead, and has agreed to look into the results.

'Not considered legitimate'

"These results should not be considered legitimate until the end of the requested scrutiny process," said Luis Almagro, secretary-general of the OAS, which is based in Washington.

UN Secretary-General Antonio Guterres said on Friday he "fully" supported OAS scrutiny, though no date or conditions for such a mission have been publicized.

The TSE has been heavily criticized for its conduct of the vote count, including by its own vice president, who resigned.

Already president since 2006, Morales will now remain in the post until 2025.

In 2016, he tried to overturn term limits but lost a referendum. Yet a year later, the Constitutional Court authorized him to stand.

Left-wing allies Cuba, Venezuela and Mexico sent their congratulations.

Venezuela President Nicolas Maduro, on a trip to Azerbaijan, accused Mesa of attempting a "coup d'etat."