Thailand’s Constitutional Court has suspended Prime Minister Paetongtarn Shinawatra pending an ethics probe into a leaked June phone call with Cambodia’s Hun Sen.
Accused of dishonesty and undermining military authority, she faces a 15-day deadline to respond.
The leak triggered the exit of coalition partner Bhumjaithai, widespread protests in Bangkok and a slump in her approval ratings.
Deputy PM Suriya Juangroongruangkit now serves as acting prime minister while Paetongtarn shifts to culture minister.
The controversy deepens Thailand’s long-running struggle between the Shinawatra dynasty and conservative establishment.