Malaysia's political crisis deepened Saturday after 94-year-old Mahathir Mohamad rejected a decision by the king to pick his rival as the next prime minister, insisting he had enough backing to return to the role.
Ex-interior minister Muhyiddin Yassin was earlier named for the job by the monarch, who appoints the country's premiers after deciding who has backing from MPs, signalling a defeat for Mahathir and the return of a scandal-plagued party to power.
It capped a week of turmoil that began when Mahathir's "Pact of Hope" alliance collapsed and he resigned as prime minister following a bid by his rivals to form a new government and push out leader-in-waiting Anwar Ibrahim.
Their alliance stormed to a historic victory in 2018 that broke the six-decade stranglehold on power of a corruption-riddled coalition, but it was riven by infighting over who should succeed the world's oldest leader.
The victory of Muhyiddin and his coalition, which is dominated by the country's ethnic Malay Muslim majority, was a shock as Mahathir had appeared to be in the lead, and it sparked widespread public anger.
Not only does the win remove a democratically elected government but it also signals the return to power of the United Malays National Organisation (UMNO), the scandal-plagued party of disgraced ex-leader Najib Razak.
UMNO was the lynchpin of a long-ruling coalition toppled from power at historic elections two years ago amid allegations Najib and his cronies looted state fund 1MDB. Najib is now on trial for corruption.
The coalition also includes a hardline Muslim party pushing for tougher Islamic laws in Malaysia.
Addressing supporters outside his Kuala Lumpur house, Muhyiddin said: "I urge all Malaysians to take the decision that has been made by the palace today well."
"These are not the people who were given the democratic mandate two years ago."