The Pheu Thai Party on Thursday requested the Constitution Court to order a halt to the planned Nov 24 anti-government rally by the Pitak Siam group.
The request was made in a letter submitted by Singthong Buachun, a Pheu Thai member, who was accompanied by party lawyer Picha Wijitsin.
Mr Singthong said the planned rally was an offence under Section 68 of the constitution since it was intended to topple a democratically elected government under led by Prime Minister Yingluck Shinawatra.
The letter was accept for consideration by Panya Udchachon, deputy secretary-general of the Constitution Court.