Muhyiddin, who led Malaysia for 17 months between 2020 and 2021, was charged in March with four counts of abuse of power. A Kuala Lumpur high court ruled those charges failed to specify details of the offenses allegedly committed, Bernama reported.

"With this, the applicant is acquitted and discharged," judge Muhammad Jamil Hussin said, according to Bernama.

Muhyiddin, 76, is also charged with two counts of money laundering in the same case for receiving bribes worth 232.5 million ringgit (US$50.24 million), which he denies.

Muhyiddin told reporters the court's decision proved the allegations against him were false and he had committed no wrongdoing.

His lawyer, Hisyam Teh, said he was confident that the other charges would not hold ground based on Tuesday's court decision.

Muhyiddin and his party have faced graft investigations since losing a national election in November, with its bank accounts frozen by the antigraft body and two leaders charged with bribery.

The former premier, who is currently banned from leaving the country, has accused Prime Minister Anwar Ibrahim of political vendetta, an allegation Anwar has denied.

Muhyiddin leads Malaysia's opposition bloc, a conservative alliance that is becoming increasingly popular in a challenge for Anwar's coalition government.

In regional elections held on Saturday, his Perikatan Nasional alliance made inroads in states that Anwar's coalition has typically dominated.

The election in six Malaysian states – Selangor, Penang, Negeri Sembilan, Kelantan, Terengganu and Kedah – will not directly impact Anwar's two-thirds majority in parliament but was widely seen as a referendum on his nine-month-old coalition government.

Data from the Election Commission showed Anwar's progressive, multi-ethnic alliance had been reelected in three of the states it had held prior to Saturday's vote, including Malaysia's wealthiest state, Selangor, which surrounds the capital of Kuala Lumpur.

Perikatan Nasional, the opposition bloc led by former Prime Minister Muhyiddin Yassin and backed by a conservative Islamist party, also held the three states under its control while building on inroads it had made among the country's majority ethnic-Malay Muslims.

Perikatan has sought to portray itself as clean of corruption, and has strongly criticized Anwar for forming an alliance with his coalition's former rival, the graft-tainted United Malays National Organization, in order to gain a majority in parliament.

Opinion surveys conducted ahead of Saturday's polling had also shown strong concerns among voters over economic issues such as rising prices, slowing growth, and the weakening ringgit currency.

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