In pictures: Clashes break out in Venezuela border towns

Venezuelan border towns were overcome with violence on Saturday, as tensions over the delivery of humanitarian aid reached breaking point.

President Nicolás Maduro has partly sealed the country's border to try to stop aid stockpiles being carried over by supporters of the opposition's Juan Guaidó - who declared himself interim leader last month.

Here are some of the most dramatic photographs of the day's events.

A demonstrator faces police at the Simon Bolivar international bridge - connecting Venezuela to Cucuta, Colombia

Images from crossing points around the country showed security forces and protesters in stand-offs against each other.

Protesters used shoes and stones as projectiles and also set fires to try to deter military blockages. Security forces responded by pushing back and using tear gas to disperse demonstrators.

A woman is overcome by tear gas at the bridge in Cucuta

A protestor with projectiles in Pacaraima on the border with Brazil

Mr Guaidó has shared messages on social media saying some aid has been able to pass in from collection points in Brazil and Colombia, despite government resistance.

Local media said supporters jumped barricades to cross the border in defiance of President Maduro's closures.

Some images appeared to show aid trucks that had managed to pass, being burned

Defecting members of security forces from the state of Bolivar being escorted by Colombian police

Hundreds of injuries were reported

A dramatic image shows a protester running into barbed wire strung across a street in Ureña

As protesters gathered at the border, President Maduro held a rally in support of his government in the country's capital Caracas.

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He was photographed dancing at the event and stood at a podium emblazoned with the words #TrumpHandsOffVenezuela - referencing the US support of Mr Guaidó.

Mr Maduro has suggested the aid is part of a US ploy to exert influence

Mr Guaidó is photographed embracing Colombia's President Ivan Duque

Supports of Mr Guaidó, however, also gathered in Caracas.

They included this man, who drew attention for wearing a Spiderman costume, while demonstrating with the Venezuelan flag.

All photographs copyright.