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 Shinawatra is accused of ethical lapses in a conversation with the Cambodian leader Hun Sen and has faced calls to resign.

Thailand's Constitutional Court suspended Prime Minister Paetongtarn Shinawatra on Tuesday, pending an ethics investigation over accusations that she was too deferential to a senior Cambodian leader when the two discussed a recent border dispute in a phone call that was leaked.