BANGKOK (Reuters) -Three Thai soldiers were injured by a landmine while patrolling the border with Cambodia, the Thai army said in a statement on Saturday, days after the two neighbours agreed to a detailed ceasefire following a violent five-day conflict last month. One soldier lost a foot and two others were injured after one of them stepped on a landmine as they patrolled an area between Thailand's Sisaket and Cambodia's Preah Vihear provinces on Saturday morning, the Thai army said. Cambodia's defence ministry did not immediately respond to a request for comment.