Thailand’s embattled prime minister was suspended from duty Tuesday and could face dismissal pending an ethics probe over a leaked phone call she had with Cambodia’s powerful former leader.

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.