The opposition is calling for President Kurmanbek Bakiyev and other leaders to resign, or meet their demands for constitutional reforms to cut the president's powers.
"This will be a form of pressure on the president to live up to his promises," Melis Eshimkanov, an MP and member of the For Reform opposition movement, said.
He said the idea is to "show the other deputies that we are ready for the parliament to dissolve itself."
President Kurmanbek Bakiyev said earlier he will submit a new draft constitution to parliament Monday.
"There will not be a quorum," Azimbek Beknazarov, an MP and opposition leader, told a public rally Saturday. "We will force him [the president] to come here and accept our version of the constitution."
The opposition accuses Bakiyev and his government of failing to deliver on promises to crack down on corruption and raise living standards in the impoverished ex-Soviet republic since coming to power in 2005 on the back of a violent public uprising, or 'tulip revolution.' His rule has been marred by economic problems, high-profile murders, prison riots, and disputes over the control of lucrative businesses.
A crowd of about 10,000 protesters gathered Friday in front of Bishkek City Hall and the national TV station. Opposition activists said they intend to demand the resignation of the City Mayor as well as the president and prime minister.
The president said earlier that opposition forces are trying to overthrow Kyrgyzstan's government, but their attempts will fail.
"There are no forces that would be able to stage a coup," Bakiyev said. "There is no threat of a coup in Kyrgyzstan, although some attempts are being made."
"I have no wish to punish anyone, but people who want constitutional reform do not act in this manner," the president said.
The prime minister said that the country's authorities had information on the opposition's plans to seize the TV station, as well as government buildings throughout the country.
Felix Kulov told parliament, "An audio recording with information on the opposition's plans to seize key government buildings in Bishkek and across the country was brought to the government's headquarters yesterday."
Security has been tightened in Bishkek for fear the protests turn violent, with hundreds of riot police on duty. But Deputy Interior Minister Sherkoza Myrzakarimov assured that police "will not intervene as long as protesters comply with the law."
