The deadliest conflict between the two nations in 14 years, now in its third day, extended to provinces about 200 miles south of where clashes first began.

Thailand and Cambodia exchanged fire along their disputed border for a second day on Friday, officials from both countries said, with more than a dozen people reported killed and more than 135,000 civilians evacuated.

The Thai Health Ministry on Friday said more than 58,000 have fled from villages to temporary shelters in four affected border provinces, while Cambodian authorities said more than 23,000 people have evacuated from areas near the border.