Paetongtarn has faced growing dissatisfaction over her handling of the latest border dispute with Cambodia, involving an armed confrontation on May 28 in which one Cambodian soldier was killed.

Paetongtarn, 38, is the youngest daughter of billionaire Thaksin Shinawatra, who is the patriarch of a political dynasty that has dominated most Thai elections since 2001.

Thailand's Constitutional Court has suspended PM Paetongtarn Shinawatra from office pending an ethics investigation into leaked phone calls.