Colombia's President Gustavo Petro has issued a decree giving him emergency powers to restore order in Catatumbo, a coca-growing region wracked by a deadly turf war.

The Colombian border village of Tres Bocas has become a ghost town as residents flee to neighboring Venezuela to escape a new wave of violence that has left at least 80 people dead and displaced thousands in Colombia’s Catatumbo region.

At least 80 people are dead and more than 18,000 have been forced to flee their homes in Colombia, officials say, amid fierce clashes between two rival armed groups on the border with Venezuela.