A car bomb exploded Saturday in southwestern Colombia, the army said, a day after conservative political neophyte Abelardo de la Espriella was sworn in as Colombia's new president. The army alleged the attack was carried out by two dissident groups of the now-defunct Revolutionary Armed Forces of Colombia, or FARC. The explosion took place at a toll plaza on the Pan-American Highway, the main road in the country's southwest. The affected road connects the departments of Cauca and Valle del Cauca, whose capital, Cali, hosted Friday's swearing-in ceremony for de la Espriella. De la Espriella has rejected the dialogue with armed groups promoted by his predecessor, Gustavo Petro.