Red-shirt co-leader Jatuporn Prompan made it clear on Tuesday that he will not accept the post of adviser to the interior minister after being ignored for a seat on the cabinet.

He said this before attending a Pheu Thai Party meeting to elect a new party executive committee.

"I have talked to Prime Minister Yingluck Shinawatra about the cabinet reshuffle and we have a good understanding. 

"I have made clear to her my intention of not taking the post of adviser to the interior minister. I would rather stay with my fellow red-shirts to protect the government," Mr Jatuporn said.

The red-shirt leader said there was now a movement underway to topple the government, similar to the one which took only a little than a month to oust the government of Somchai Wongsawat.

He claimed he had information about the movement from "friends" who were once in the Centre for the Resolution of the Emergency Situation (CRES) set up the Democrat-led government to quell the United Front of  Democracy against Dictatorship (UDD) protesters in 2010.

Mr Jatuporn said he had earlier warned those concerned not to underestimate the Pitak Siam group, which rallied at the Royal Turf Club on Sunday.  The next time the group might come out in larger numbers, he added.

There were many forms which could be used by those behind the movement to bring down the government and they had control of independent organisations under the 2007 constitution, he said.