BOGOTÁ, Colombia - More than 80 people have been killed, and about 20,000 displaced, in ongoing clashes between armed groups in Colombia, officials say, marking one of the deadliest waves of violence since the country’s 2016 peace accords.

At least 20 Colombian fighters from rival rebel factions were killed in weekend clashes over control of a strategic jungle area for drug trafficking, military sources and the human rights ombudsman office reported on Monday.