Parties in the coalition government have set up a joint committee to study charter amendment, Pheu Thai MP Samart Kaewmeechai said on Wednesday.

Mr Samart said the 11-member committee would look into various problems related to the government's attempt to amend the 2007 constitution and study the central ruling of the Constitution Court on the legality of the charter amendment bill and the opinions of individual judges.

The committee would consider whether the charter amendment bill should be put to the third reading vote in parliament in order to amend Section 291 to set up a constitution drafting assembly, or whether to amend the entire charter, or whether it should be amended only by sections.

The study might take three or four months to complete, he said.

The committee would hold its first meeting next week.

The panel comprises seven people from Pheu Thai, two from Chartthaipattana, one from Chart Pattana and one from Palang Chon parties.

Representing Pheu Thai are Pokin Polakul, Varathep Rattanakorn, Pongthep Thepkanchana, Phumtham Wechayachai, Udomdej Rattanasathien, Pirapan Palusuk and Samart Kaewmeechai.

Paradorn Prisnananthakul  and Chayut Phumkanchana represent Chartthaipattana.

The two others are Wannarat Channukul of Chart Pattana and Santasak Ngampichet of Palang Chon.