In the latest move which could probably end the rally, Deputy Prime Minister Suthep Thaugsuban is expected to surrender to Department of Special Investigation (DSI) on Tuesday to acknowledge a complaint by families of April 10 violence.
The decision came as red shirts leaders announced that they would end the rally on the same day Suthep surrendered to face the charge.
Families of the April 10 violence, led by opposition MPs of Phue Thai Party, have filed a complaint with DSI against Suthep and PM Abhisit Vejjajiva for allegedly ordering the crackdown, resulting in death and injuries.
Red shirt leader Nuttawut told the protesters on Monday that for Abhisit case, he would accept legal procedure because Abhisit has an immunity as an MP, making him have to ask permission from the Parliament before surrendering in the case.
"If Suthep doesn't turn himself in for April 10 deaths, reds won't disperse," Natthawut said.
Natthawut said the red-shirt leaders agreed with the prime minister's proposal to hold the election on November 14.