Protesters and Venezuelan National Guard (GNB) exchanged rocks and other projectiles at Simon Bolivar bridge, near the border town of Cucuta on Monday evening.

Footage shows protesters collecting rocks and throwing them at the heavily armored GNB, who responded by opening fire with tear gas and throwing the rocks back, causing unprotected protesters and Colombian police to flee.

The bridge was the scene of fierce clashes on Saturday, after Venezuelan security forces blocked humanitarian aid, organized by the US, from entering the country. Nearly 300 were injured and four were reported dead in the clashes.