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A man in a red jacket ran onto the stage during Venezuelan President Nicolas Maduro's inauguration speech today and grabbed the microphone, but was quickly tackled by his bodyguards.
"The security has failed totally. They could have shot me easily," Maduro said after resuming his speech to an audience that included the leaders of Brazil, Iran and Argentina.
Fireworks have been let off in Caracas as Venezuela elected Nicolas Maduro as president - opposition backers banged pots and pans in reaction to the vote result.
Venezuela's ruling party candidate Nicolas Maduro called for peace and said he would be willing for Sunday's election result to be audited after officials said he took 50.76 percent of votes, compared to 49.07 percent for his rival Henrique Capriles.
"We don't want violence, we want peace," Maduro said in a speech to the nation.
"They [the opposition] want an audit, we welcome the audit ... I formally request the National Electoral Commission to carry out an audit."
Venezuela's Nicolas Maduro says he is willing to allow election result audit and calls for peace.
- Read: Venezuela elects Maduro.
Ruling party candidate Nicolas Maduro won Venezuela's presidential election on Sunday with 51 per cent of votes, the electoral authority said, allowing him to carry forward the socialist policies of the late Hugo Chavez.
Maduro's young challenger, Miranda state Governor Henrique Capriles, took 49 percent of the ballots, the authority said, in a tighter-than-expected vote.
Venezuela elects Nicolas Maduro as president in the country's election, the Electoral Authority says.
The election board says the result is irreversible and urges Venezuelans to respect the results and stay indoors.
- Read: Fears over Venezuela vote.
Both sides in an election to choose a successor to Venezuela's late leader Hugo Chavez expressed confidence of victory after Sunday's vote, raising fears that the official result could be contested.
Acting President Nicolas Maduro led all polls before the vote, buoyed by Chavez's blessing before he died from cancer last month and vowing to continue the former president's self-styled socialist revolution.
But Maduro's rival, state governor Henrique Capriles, appeared to close the gap in the last days of the short campaign.
- Read: Fears over Venezuela vote.
Polls have officially closed in Venezuela's presidential election, but some have remained open past the deadline.
- Read: Venezuala voting row.
Following opposition complaints that some people were illegally helping elderly voters cast their ballots, Henrique Capriles urged his followers to report any violations of election laws.
But he also stressed he would respect the outcome of the vote, whatever it might be.
"Today, all Venezuelans are reporters. If you see something irregular, take a picture, air it on social media," Capriles said after voting.
"But let there be no doubt, we will respect the will of the people."
Electoral authorities said voting was going smoothly and that there was no evidence of irregularities.
Given the deep mutual mistrust on both sides, some worry that a close or contested result could spark unrest.
Some 170 international observers were on hand, many from left-leaning political parties across Latin America.
Polls were due to close on Sunday, but voting continued past that in some places to accommodate queues.
Venezuela opposition candidate Henrique Capriles has alleged via Twitter there is a plan to “change” the country's election result.
Venezuela's opposition leader, Capriles, alleged there was a plan to try and change the results of the South American nation's presidential election.
"We alert the country and the world of the intention to try and change the will expressed by the people," he said in a Twitter message.
Capriles' aides confirmed the tweet was legitimate.
Government officials called it irresponsible.
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The former bus driver rose through the political ranks with his faithful support of the late President.