At least two people have died and several others injured in clashes at Venezuela's border with Brazil.
A local media report has stated that Venezuelan security forces opened fire on a group of people who tried to block them from travelling to the border.
President Nicolás Maduro has closed the country's border with Brazil amid a row over the delivery of humanitarian aid.
It comes as two rival concerts get underway on either side of a bridge linking Venezuela and Colombia.
An event on the Colombian side is aimed at raising money for Venezuela, where the opposition says the lack of basic items has left thousands at risk of dying.
President Maduro's government is holding its own concert.