Five additional main rally stages will be set up tonight at the Victory Monument, Siam Square, Asok intersection, Lumpini Park and Ratchaprasong intersection, Mr Ekanat said.
Some small rally stages will also be set up in parallel on ten main roads in the capital, he said.
The spokesman said protesters from the West, the East and the Northeast of Thailand will come to join the PDRC’s main rally sites in Bangkok on Sunday and the protests might be prolonged until Monday morning.
Sathit Wongnongtoey, a core member of the PDRC, said the rally at Ratchadamnoen road will be overseen by the Kong Thap Tham (Dhamma Army) and the Network of Students and People for Thailand's Reform (NSPTR).
He said the rally at the Victory Monument will be controlled by Issara Somchai, a core-leader of the PDRC, the rally at the Art and Cultural Centre of the Bangkok Metropolitan Administration (BMA) will be responsible by lecturers and students of Chulalongkorn University, he said.
The Ratchaprasong businessmen group will oversee the rally at the Ratchaprasong intersection, Silom Businessmen group will hold the rally at Lumpini Park, and the rally at Asok intersection will be controlled by business operators in the area.
Mr Sathit said the PDRC also plans to rally in front of caretaker Prime Minister Yingluck Shinawatra’s Bangkok residence in Soi Yothin Pattana 3 about 9am on Sunday.