The Peace-keeping Operations Command is not planning to disperse the crowds as alleged and has no involvement in a spate of bombing incidents in recent days, Army spokesman Colonel Sansern Kaewkamnerd said on Tuesday.
"In light of attempts to spread false informations, the people should check and verify what they heard before forming judgement," he said.
The command is not a party to the dispute with the red shirts and its main mission is to ensure peace and social order, he said.
He added that speakers at the rally had no justification to cause a scare among the protesters.
He also said the authorities were concerned for a mud-slinging campaign designed to frame them for recent bombings as a pretext to invoke the emergency rule.
As a security precaution ahead of Wednesday's House session, the command has designated eight roads surrounding Parliament as the traffic restriction zone where traffic police are authorised to close off the routes to unauthorised vehicles.
In another order, the command has banned any attempts to stir up trouble or provoke violence at Parliament and surrounding areas.
An offender of the two peace-keeping measures can be punished by a jail term of up to one year and a fine of no more than Bt20,000.
