KANTHARALAK, Thailand -- Thailand’s government said a rocket attack from Cambodia on Sunday killed a 63-year-old villager, its first civilian death reported as a direct result of combat over the past week along the border of the two Southeast Asian nations.

Thailand’s prime minister is gambling on early elections as a nationalist wave fueled by the border conflict with Cambodia offers his conservative bloc a chance to best pro-democracy rivals that have won every election this century.

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.

Thai officials have said they did not agree to a ceasefire, and Cambodia has not commented on Mr. Trump's claim. Its defense ministry instead said Thai jets carried out airstrikes Saturday morning. Cambodian media reported Mr. Trump's claim without elaborating.

Heavy combat between Thailand and Cambodia entered a second week on Monday, with Phnom Penh claiming that Thai bombing is hitting deeper into its territory, coming close to shelters for people who had already fled dangerous areas along the border.

A fierce border battle between Thailand and Cambodia raged for a second day and spread to new fronts on Tuesday, as both countries accused each other of shelling civilian areas and Bangkok vowed to push on with its planned military operations.

President Trump is expected to speak with Thailand’s prime minister on Friday, as he seeks burnish his self-styled image as a peacemaker by intervening in a border conflict between Thailand and Cambodia that entered its fifth day.