Thai police tightened security in Bangkok Saturday, as anti-government protesters moved on state-run telecommunications offices in their latest bid to topple the government.
Capital city police said the protesters also plan to surround the headquarters of the national and city police, Government House and even a zoo.
More than 1,000 protesters briefly stormed into army headquarters Friday in an attempt to convince the military to join their efforts to topple the government of Prime Minister Yingluck Shinawatra. They left the compound peacefully after about two hours.
Army Commander General Prayuth Chan-ocha later urged protesters not to force the army to take sides.
Opposition leaders say Sunday will be their "victory day" and have called for supporters to besiege the prime minister's office. They vow to take over every ministry until Prime Minister Yingluck resigns.
She survived a no-confidence vote in parliament Thursday. The prime minister refuses to step down and has called for dialogue to resolve the situation. She vows not to use violence to stop the protests.
Well-wishers hold pictures of Thailand's King Bhumibol Adulyadej, Dec. 4, 2013, as they camp outside the palace where he is staying in Hua Hin, Prachuap Khiri Khan province, Thailand, a day before his birthday.
Anti-government protesters shout as they break down the barriers at the Thai Police Headquarters in Bangkok, Dec. 4, 2013.
An anti-government protester sweeps the street around the Democracy Monument, Bangkok, Dec. 4, 2013.
Anti-government protesters sweep the street around the Democracy Monument after weeks of protesting and days of clashes with police in Bangkok's city center, Dec. 4, 2013.
An anti-government protester uses a wire cutter in an attempt to break down the barriers at the Thai Police Headquarters, Bangkok, Thailand, Dec. 4, 2013.
Anti-government protesters gesture towards riot police outside the headquarters of the ruling Puea Thai Party of Prime Minister Yingluck Shinawatra in Bangkok, Nov. 29, 2013.
An anti-government protester gestures towards riot police outside the headquarters of the ruling Puea Thai Party of Prime Minister Yingluck Shinawatra in Bangkok, Nov. 29, 2013.
Anti-government protesters shout slogans outside the headquarters of Prime Minister Yingluck Shinawatra's Puea Thai Party in Bangkok, Nov. 29, 2013.
Anti-government protesters march to the government complex in Bangkok, Nov. 27, 2013.
Suthep Thaugsuban, a former deputy prime minister leading the protest, waves to his supporters during an anti-government march in Bangkok, Nov. 27, 2013.
Supporters cheer anti-government protesters marching in Bangkok, Nov. 27, 2013.
A Buddhist monk blows a whistle during a rally outside Interior Ministry in Bangkok, Nov. 26, 2013.
Riot police stand guard behind barricades during an anti-government rally in Bangkok, Nov. 26, 2013.
Anti-government protesters march toward Thailand's Finance Ministry in Bangkok, Nov. 25, 2013.
An anti-government protester fights with police at a barricade near Government House in Bangkok, Nov. 25, 2013.
The protesters have taken over parts of the finance and foreign ministries and surrounded the interior ministry. On Thursday they pulled down electrical cables outside police headquarters and an adjacent hospital, forcing them to use backup power.
The street protests are the largest in Thailand since 2010, when more than 90 people were killed in a military crackdown on an opposition protest.
The latest demonstrations were triggered several weeks ago by an amnesty bill that would have allowed former Prime Minister Thaksin Shinawatra - Yingluck's brother - to return home and avoid a two-year jail term for corruption. The Senate rejected the bill, but protests have continued.
Prime Minister Yingluck was elected in 2011. Her brother was toppled by a military coup in 2006 and later convicted of corruption. He has lived in exile to escape the charges, which he says were politically motivated.
Some information for this report provided by AP, AFP and Reuters.