A deadly border conflict between Cambodia and Thailand has entered its fourth consecutive day, with both nations exchanging heavy artillery fire and reporting mounting civilian and military casualties.

More than 130,000 people have fled as fighting extended into a third day, with new flashpoints emerging and both sides seeking diplomatic support to end a conflict that is threatening to escalate.

US President Donald Trump contacted the leaders of Cambodia and Thailand on Saturday in an attempt to broker a cease-fire between the two countries amid an ongoing armed conflict.

Donald Trump said he has held a telephonic conversation with Cambodian Prime Minister Hun Manet, adding that he would call Thailand's PM as well, requesting the two sides to end the war that has already 'killed many people'.

The conflict's death toll rose substantially, with Cambodia reporting 12 new deaths and Thailand one, making the total death toll 13 Cambodians and 20 Thai

Thailand and Cambodia's ongoing conflict escalated further on the third day, with clashes reported for the first time in the rival-locked nations' coastal regions

The deadly conflict on the Thai-Cambodian border pits a longtime United States ally with decades of experience against a relatively young armed force with close ties to China.

BANGKOK: Former Prime Minister Thaksin Shinawatra has denied that personal conflicts led to the Thai-Cambodian war, stressing that non-interference and supporting military efforts were taken to resolve the crisis.