The announcement comes a day after opposition leader María Corina Machado reappeared in public after months in hiding, was apprehended and later released

President-elect Donald Trump says Venezuela's embattled opposition leader must be protected as President Nicolas Maduro takes the oath of office for a third six-year term.

Nicolas Maduro is set to be inaugurated for a third term despite alleged vote fraud and international condemnation of his repressive tactics. His opponent was briefly detained at a protest on Thursday.

Venezuela closed its border with Colombia and its airspace for 72 hours on Friday as President Nicolas Maduro prepared for his third-term inauguration.

Venezuela closed its border with Colombia on Friday ahead of President Nicolas Maduro's inauguration, the governor of a frontier state said, citing an "international conspiracy".

The opposition accuses Maduro, 62, of stealing the election of July 28 last year, and the United States, European Union and several Latin American countries have recognized opposition candidate Edmund

During her detention, an aide said, Maria Corina Machado “was forced to record several videos.” She has garnered enormous support for her opposition to Nicolás Maduro.

Colombia hosts more Venezuelan migrants than any other country in the region. UNICEF is there, helping children and adolescents.

Machado, a former lawmaker who has spearheaded the opposition to President Nicolas Maduro in recent years, was detained by security agents who shot at motorcycles she was using to leave a protest in Caracas, the capital, according to posts on social media from her party. She was freed about an hour later, according to the party.

Venezuelan strongman Nicolás Maduro began a third term as president on Friday, cementing his increasingly authoritarian rule.

Venezuelan President Nicolas Maduro is set to be sworn in for a third term on Friday amid protests and international calls for him to stand aside.