Tens of thousands of people gathered on Sunday around the Simon Bolivar international bridge that links Colombia and Venezuela to attend a free concert.

Organised by Grammy award winning Colombian singer Juanes, the concert was held to ease tensions between the two countries.

The "Peace Without Borders" concert also featured Colombian singer Carlos Vives, and Dominican Juan Luis Guerra.

Juanes had the idea for the concert after a dispute that started March 1.

On the day, Colombia launched a commando raid into neighboring Ecuador to kill a leading rebel commander and nearly two dozen other members of Revolutionary Armed Forces of Colombia.

In the days after the military assault, Venezuelan President Hugo Chavez and Ecuadorean President Rafael Correa dispatched troops to their borders with Colombia.

The three nations' presidents shook hands and reached a tentative detente soon after at a Latin American summit in the Dominican Republic. Juanes, a Colombian, decided to push ahead with the concert to promote good relations.