The Bad Students Facebook page said that two of its representatives had gone to Chanasongkram Police Station on Friday to submit documents detailing their plan to kick off the rally outside the ministry on Ratchadamnoen Road at 1pm.
The group will then march to Democracy Monument to join the “Mob Fest” event supported by several pro-democracy movements.
Arnon, meanwhile, posted a comment on his Facebook page saying that number of protesters has not dropped as claimed by the government.
The National Security Council had announced on Thursday that anti-government numbers were falling.
He said the government should take care its actions do not rouse further anger, or it will find the protests rising to an uncontrollable peak.
Arnon said the protests at this point have not reached their highest point, because several important factors are not ready.
“This is the first three months after monarchy reform was first mentioned. People are getting over their fear and are searching for a better future. This is just the beginning,” he said.