The case targets members of the progressive People’s Party and its dissolved predecessor Move Forward Party, who in 2021 sought changes to legislation that protects the monarchy from criticism. The court said proceedings would begin on June 30 and confirmed that 10 serving lawmakers among the accused would not be suspended pending trial.

Thailand’s lese-majeste law is among the strictest globally, carrying penalties of up to 15 years in prison per offense. Critics, including members of the opposition, have argued that the law has been used to suppress dissent and political opposition.

The court’s move marks the latest setback for Thailand’s liberal, anti-establishment bloc, which has faced a series of judicial rulings in recent years. In early 2024, a court ruled that efforts by Move Forward to amend the law were unconstitutional and undermined the democratic system.

The party was subsequently dissolved, with its members regrouping under the People’s Party banner.Among those named in the case are party leader Natthaphong Ruengpanyawut and deputy leader Sirikanya Tansakul.

Despite strong polling support, the People’s Party finished second in February’s general election to the Bhumjaithai Party led by Prime Minister Anutin Chanvirakul, after earlier being blocked from forming a government following its 2023 election victory.