BANGKOK - Thailand's National Anti-Corruption Commission (NACC) on Thursday set up a committee to investigate the assets of former prime minister Yingluck Shinawatra and four other former ministers who were involved in the controversial rice-pledging scheme, the Bangkok Post reported.

The other four are former commerce ministers Niwattumrong Boonsongpaisan and Boonsong Teriyapirom, and former deputy commerce ministers Yanyong Phuangrach and Phum Sarapol, according to the Bangkok Post.

The committee, headed by NACC member Narong Ratha-amarit, is tasked with finding out if the five politicians have accumulated unusual wealth from their handling of the rice-pledging scheme, reported the Bangkok Post.

The scheme, introduced in 2011, pledged to pay farmers well above the market rate for their rice, but has run into financial problems.

Ms Yingluck and the former ministers, who stepped down on May 7 and May 22, were required to declare their assets to the NACC by June 5 and June 20 respectively.