Sri Lanka, April 27 -- The death toll from a bombing on a Colombian highway on Saturday has risen to 20, with another 36 people injured, including minors.

Videos shared from the scene showed damaged vehicles and debris strewn across the Pan-American Highway in the southern Cauca region.

Colombian President Gustavo Petro blamed the attack on rebels linked to dissident factions of the Revolutionary Armed Forces of Colombia (Farc), while local governor Octavio Guzman described the attack as the most brutal against civilians in decades.

Peace talks between Farc and the government in 2016 ended in a deal under which thousands of fighters demobilised, but some broke away and refused to disarm.

"Those who carried out this attack... are terrori...