Dhaka, July 30 -- A fragile ceasefire between Thailand and Cambodia largely held on Tuesday despite renewed skirmishes along the border, following a U.S.-backed diplomatic push to halt the deadly conflict.

The truce, brokered in Malaysia and effective from midnight Monday, was tested almost immediately as Thailand accused Cambodia of launching attacks at several points early Tuesday. Cambodia denied the accusations, insisting there had been no new firing.

Thailand's government later acknowledged renewed clashes at Phu Makhuea, a contested mountain area near Sisaket province, with gunfire continuing into Wednesday morning. However, no heavy artillery was reportedly used. Thai Prime Minister's Office spokesperson Jirayu Houngsub confirmed...