Police fired teargas and used water cannon to disperse several protesters, including a senior monk, trying to force their way into government's Centre for Administration for Peace and Order (CAPO).
The protesters also attempted to occupy television stations and force them to air their announcements. Five protesters were injured by the teargas and sent to a nearby hospital.
The People's Democratic Reform Committee, which has been campaigning for six months for the ouster of the government, launched its "all-out final battle" after Yingluck Shinawatra was ordered to step down as Premier on Wednesday by the Constitutional Court over the illegal transfer of her security chief.
The two court decisions have bolstered the opposition which has been demanding Yingluck's ouster for months.
Though Yingluck has been dismissed, her Pheu Thai party's caretaker government remains in place and says it is working towards a July 20 election.
Court also dismissed nine members of Yingluck's government. Protesters now want to chase the remaining members of her cabinet from power.
To press for their demand, thousands of protesters -- mostly members of Bangkok's middle classes and activists from southern Thailand -- fanned out across the city after protest leader Suthep Thaugsuban issued instructions to overthrow the government and root out any traces of Shinawatra clan.
The protesters say Yingluck's government is controlled by her brother Thaksin Shinawatra, who was ousted by the military as prime minister in a 2006 coup. They say Shinawatra family has corrupted Thailand's democracy and want an un-elected "people's council" to step in.
Government supporters, known as "red shirts", have also planned a mass rally tomorrow. Ruling Pheu Thai party asked the military to arrest Suthep for blatant breaches of the law, alleging he was a threat to national security.
The presence of both rival camps on the streets of the capital has raise fears of violence. So far, 25 people have been killed since the anti-government protesters began their campaign in November.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
