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Story highlights
NEW: The death toll from Tuesday's clashes rises to five, officials say
NEW: The number of wounded, both police and protesters, reaches 73
Prime Minister Yingluck Shinawatra is facing charges from anti-graft body
Police are trying to clear groups of protesters from the center of the city
Thailand’s bitter political crisis intensified Tuesday as five people were killed in clashes between anti-government protesters and police, and the country’s anti-corruption commission filed charges against the Prime Minister.
The violence erupted in the heart of Bangkok after months of protests against Prime Minister Yingluck Shinawatra that have deepened political divisions in the Southeast Asian nation.
A police officer died after he was shot in the head, and four other people – at least two of them protesters – were also killed, officials said.
Thai anti-government demonstrators massed Wednesday outside the Prime Minister’s makeshift office, a day after clashes with police in the streets of Bangkok killed five people.
10 questions: What’s behind the protests in Thailand?
Police were trying to clear demonstrators, who have been campaigning against Yingluck for months in central Bangkok.
After police fired tear gas in an attempt to disperse crowds of demonstrators in the streets, people among the protesters began firing guns at police.
With the two sides about 200 meters (656 feet) apart, police responded by firing rubber bullets and live ammunition.
During the firefight, which lasted about 20 minutes, a grenade exploded near a group of police officers, knocking them to the ground. At least four of them were wounded, said Lt. Gen. Paradon Patthanathabut, the national security chief.
Thousands of protesters
About 6,000 demonstrators were estimated to be on the streets of the city Tuesday, Paradon said, and thousands of security personnel have been mobilized.
Protesters opposed to Yingluck have been camped out since November at official buildings around the city, including Government House, the office of the prime minister and appointed cabinet ministers.
Leaders of the protests say they want Yingluck’s government replaced by an unelected “people council,” which would oversee electoral and political changes.
Clashes among pro- and anti-government groups had flared up during the crisis, leaving at least 10 people dead and hundreds wounded. The government responded by imposing a state of emergency last month.
Police move in
Until recently, authorities had largely refrained from confronting the demonstrators directly, even when they prevented large numbers of people from voting in recent elections.
That changed last week as police began attempts to seize sites occupied by protesters for months.
Government officials said the protesters’ actions were blocking public access to government services, making intervention by authorities necessary.
Officials claimed public sentiment was turning against the demonstrators. But the protesters have so far refused to give way.
Police said they arrested 145 protesters near the Ministry of Energy on Tuesday.
Rice subsidy controversy
As the violence unfolded on the streets, Yingluck faced pressure on another front when Thailand’s anti-corruption commission said it was bringing charges against her over a rice-subsidy program.
The National Counter-Corruption Commission said in a statement that it was calling Yingluck to appear February 27 to face charges that she failed to act on warnings of corruption in the program that her government introduced in 2011.
The program, which offered farmers well above the market rate for their rice, has run into financial problems. Problems with the subsidy program have angered many farmers, who make up part of Yingluck’s support base in the north and east of Thailand.
The anti-corruption commission’s charges could eventually lead to the suspension of Yingluck from all political positions.
In a televised speech before the commission’s announcement, Yingluck said the rice subsidy program had been successful over the past two years and accused her political opponents of “obstructing the government’s implementation of the project.”
She said there was “no conspiracy to corrupt.”
Long-running crisis
Protesters say Yingluck is a puppet of her billionaire brother, the deposed, exiled former Prime Minister Thaksin Shinawatra.
The protests were sparked in November by Yingluck’s government’s botched attempt to pass an amnesty bill that would have paved the way for her brother’s return to the political fray in earnest.
Yingluck had hoped the elections held earlier this month could help ease tensions. But the main opposition party boycotted the vote and protesters caused widespread disruption.
That left the outcome of the election inconclusive, without enough results to reopen parliament.
It remains unclear when election officials will be able to complete the voting in disrupted areas.
With Thailand still scarred by a severe bout of civil unrest in 2010 – in which a crackdown on pro-Thaksin protesters by security forces left scores of people dead – police had until recently largely refrained from using force on the current demonstrations.
Protesters pledge more demonstrations
READ: Thailand in crisis: What’s happening on the ground and why
CNN’s Kocha Olarn reported from Bangkok, and Jethro Mullen reported and wrote from Hong Kong.