On 2026-08-31, the Pan-American Highway linking Popayán and Pasto was closed at the El Estrecho, Patía, Cauca after an explosive attack on a military unit the previous night. ^[1] Troops of the Colombian Army destroyed five improvised explosive devices in the southern region of the Cauca department. ^[2] The Army preliminarily attributed the attack to the Carlos Patiño guerrilla group, according to the Third Division. ^[3] The Third Division of the Colombian National Army stated that the attackers used a vehicle-type van to launch seven cylindrical explosive devices against the military installations in El Estrecho. ^[4] General Diego Jaramillo, commander of the 29th Brigade, stated that specialized capabilities were employed to control the threat and reduce risk in the zone. ^[5] The charges remained undetonated after an attack by FARC dissidents against the Training and Instruction Battalion of the 29th Brigade in El Estrecho, El Patía, which left one soldier and three civilians injured. ^[6] The five devices still represented a risk to the civilian population, troops, and daily users of the Pan-American Highway. ^[7] The highway closure caused a congestion of vehicles using the route between Cauca and Nariño, and the road remains fully closed until authorities complete security checks. ^[8]