BANGKOK (AP) — Three Thai soldiers on patrol were wounded Saturday when one stepped on a land mine in territory along the border with Cambodia, Thailand’s army announced. The incident came just two days after the two countries reaffirmed their adherence to a ceasefire to end a brief armed conflict.

A landmine explosion injured three Thai soldiers patrolling the Cambodian border, jeopardizing a recently extended ceasefire. The incident occurred in Sisaket province, causing severe injuries and prompting Thailand to accuse Cambodia of planting new landmines,

Thailand’s army said three soldiers were injured in a landmine blast near its disputed border with Cambodia, threatening a fragile ceasefire agreement between the two neighbors.