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.

Yet up until the recent outbreak that began in late May and ended with a cease-fire on July 28, the two countries were still able to manage bilateral military cooperation after the last of the Khmer Rouge insurgency in Cambodia was defeated in 1998.