Saturday’s incident is the third time in a few weeks that Thai soldiers have been injured by mines while patrolling along the border.

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.

Thailand has begun a series of diplomatic actions under the Anti-Personnel Mine Ban Convention (Ottawa Convention) following three separate landmine incidents that have seriously injured 11 Thai military personnel.