Venezuela closed its borders and airspace to Colombia on Friday, the day President Nicolas Maduro is to be sworn in as the country's highest authority.

Venezuelan President Nicolás Maduro was sworn in for a third six-year term Friday despite international condemnation of his recent reelection as illegitimate, as his administration grows increasingly brazen in cracking down on opponents.

The increase to $25 million reflects "the gravity of his crimes and the continued threat he poses," a senior official said.

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.

The Venezuelan capital Caracas was getting ready on Friday to host the inauguration of President Nicolas Maduro's third consecutive term as leader. Several central avenues of the city were blocked for the celebration under heavy police patrols.

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

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.

Venezuela’s authoritarian leader Nicolás Maduro was sworn in for a third six-year term with all the pomp and circumstance of an inauguration, a sash with the colors of the country’s flag around his chest.

Maduro’s inauguration seals an election outcome that opposition politicians and the US government say was stolen.

The US has announced an increased $25m (£20.4m) reward for information leading to the arrest of Venezuelan President Nicolás Maduro