“The junta government yearned for international acceptance after the coup … and formed a dark alliance with Malaysia,” Pannika said.

“The only person who can issue these orders is Prime Minister Prayuth Chan-ocha,” Pannika said.

Pannika cited irregularities surrounding Thailand’s arrest and the subsequent confession of Xavier Justo, the Swiss national who was arrested in Thailand in 2015 and the first whistle-blower in the 1MDB affair.

The government also harboured Malaysian financier Low Taek Jho, known as Jho Low, allowing him to enter the country at least five times between October 2016 and May 2018, despite Low having an Interpol red notice from Singapore, she said.

Low has been charged in Malaysia and the United States over the alleged theft of $4.5 billion from 1Malaysia Development Berhad, set up by former Malaysian Prime Minister Najib Razak with the help of Low, to promote economic development.

At least six countries, including the United States, have launched money laundering, financial mismanagement and criminal probes into 1MDB dealings.

Low has denied any wrongdoing. His whereabouts are unknown.

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Future Forward Party said it would have opened an investigation on corruption and money laundering related to the 1MDB case if it were in power.

“If we were in government, we would investigate. We want a government that is a responsible neighbour and acts with dignity,” Pannika said.

“Since we have been dissolved, we can’t, but the Thai public can demand the truth.”

A spokesman for the Malaysian prime minister’s office did not immediately respond to requests for comment.