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

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

Paetongtarn Shinawatra, Thailand’s youngest prime minister and scion to the country’s most prominent political dynasty, may lose power barely a year after taking the top political office.