Hundreds of Buddhist monks in Cambodia on Friday held a religious ceremony to honor soldiers killed in recent border clashes with Thai forces, and to pray for peace.

They marched from the country’s main religious school near the Royal Palace, in the capital Phnom Penh, to a nearby temple, where they were joined by nuns and laymen and women.

A board inside displayed the photographs of more than 40 men in uniform. It wasn’t clear whether these images were all of soldiers killed or whether they included images of those wounded and captured.

Cambodia has only admitted to the deaths of six of its troops in the fighting, which began late last month and continued for five days.

The monks chanted and prayed to honour the souls of the dead soldiers and to pray for lasting peace.

Dozens of people were killed in the fighting and over 260,000 displaced on both sides of the border.

It began on July 24, after a land mine explosion along the border wounded five Thai soldiers, the second such incident in a week.

It was the latest eruption of hostilities in a decades-old dispute over ownership of several small pockets of land along the 800-km land border.

Under pressure from U.S. President, Donald Trump, the two countries agreed a ceasefire on July 28.

This continues to hold, though tension remains high, with both sides accusing the other of breaches and of acting in bad faith.

Talks in Kuala Lumpur, Thursday, reaffirmed commitment to the ceasefire deal but failed to secure the release of 18 Cambodian soldiers, captured in disputed circumstances, after the agreement went into effect.

Thailand says it is treating the men in full compliance with international humanitarian law and will free them once "active hostilities" end.

AP video shot by Heng Sinith and Sopheng Cheang