Seven civilians were killed in an ambush in Uganda, endangering a ceasefire that has halted two decades of civil war. The Ugandan Military has pinned the blame on the Lord’s Resistance Army rebels.

Army spokesman for northern Uganda Chris Magezi told Reuters that the rebels attacked three trucks on their way to southern Sudan on Monday night, about 4km (2.485 miles) from the border.

“We recovered the bodies this morning,” he said. “They were stripped naked then beaten to death. The rebels also burned the trucks and looted their merchandise.”

This is the first attack of this nature since peace talks with teh government began in south Sudan in July.