SURIN, Thailand -- Three Thai civilians were killed as heavy combat continued along the country's border with Cambodia, the Thai military said Thursday, marking the country's first civilian fatalities since the fighting resumed.

Fighting between Thailand and Cambodia entered its fourth day on Thursday as both sides waited for a promised telephone call from U.S. President Donald Trump, who says he believes he can again end the conflict between the two Southeast Asian nations.

Renewed border fighting between Thailand and Cambodia showed no signs of abating Wednesday, with hundreds of thousands of displaced people in strained conditions as more flooded into temporary shelters.

As border clashes between Cambodia and Thailand reignited in December, a video was shared in Khmer-language posts falsely claiming it showed a Thai jet spraying "toxic fumes" on the Cambodian army. The footage previously circulated in a post from mid-November about an aerial firefighting operation in the Australian state of New South Wales,

The escalation broke the ceasefire brokered in July by Trump who threatened to halt trade talks with the two countries unless they ended the fight.

Thailand’s previous letter to UN calls on international community to urge Cambodia 'to cease all acts of hostilities and provocations' - Anadolu Ajansı