More than 78% of the 18.9 million Venezuelans registered voted in Sunday's presidential election, Lucena said.

CNN: SHARE THIS

The head of the electoral commission, Tibisay Lucena, said the candidates would have to register for the race by Monday.

BBC: Venezuela announces post-Chavez election date

The lawsuit was filed by the Attorney General of the Union (AGU), Luis Inacio Lucena Adams, to a federal court in the state of Goias.

BBC: Twitter sued by Brazil over drink-driving trap alerts

Some people have speculated Venezuela will not be ready to organize the vote in time, but elections council chief Tibisay Lucena said the country's electronic voting system was fully prepared.

NPR: Venezuela Sets Presidential Election For April 14

The country saw one of its high participation rates in decades Sunday, with almost 81% of voters going to the polls, according to Tibisay Lucena, president of the National Electoral Council.

CNN: SHARE THIS

The council's president, Tibisay Lucena, told AFP news agency that the expanded audit was not a recount but would cover all ballot boxes not audited on election day by reviewing a sample two-thirds of them over the next month.

BBC: Nicolas Maduro sworn in as new Venezuelan president