Thailand's acting prime minister has moved to dissolve parliament, his party said Wednesday, after the largest opposition party backed a rival candidate to lead the country.

Prime minister Paetongtarn Shinawatra was ousted by the Constitutional Court last week over her handling of a border row with Cambodia, leaving a power vacuum in the kingdom's top office as rival factions jostled to replace her.

Her Pheu Thai party -- still governing in a caretaker capacity -- had courted the power-broking opposition People's Party to back its own new candidate for prime minister.

But the People's Party declared its support for conservative tycoon Anutin Charnvirakul instead.

Just moments later, Pheu Thai secretary general Sorawong Thienthong told AFP that acting Prime Minister Phumtham Wechayachai

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