Reportedly, the protesters will try to remove Prime Minister Yingluck Shinawatra from office and push through electoral reforms before a general election is held.
Thanks to the government's soft approach on the protesters, the number of protesters has dwindled to around 2,000 over the past week. However, former deputy premier Suthep Thaugsuban, who is leading the protesters, has called for marches on Thursday and Friday and reportedly, a big rally will be organised on Sunday.
"We will chase Yingluck out this Sunday after she made it clear she will not step down as caretaker prime minister," he said late on Tuesday.
In November, protests in Bangok had turned violent resulting in the death of several people. After that, government decided to act soft on protesters and police were instructed not to stop the people from staging protests on streets.
Yingluck won a landslide victory in 2011. After the protests erupted, she agreed to step aside as prime minister. Until the elections are conducted and results declared, she will continue to handle state issues as caretaker prime minister.