The Thai government on Sunday will impose a curfew in parts of Bangkok after three days of fighting that has killed 24 people and spiraled into chaotic urban warfare, with both sides calling for reinforcements.
Prime Minister Abhisit Vejjajiva said a curfew could help to restore order in the capital city known for its nightlife, as the army struggles to end weeks of increasingly violent protests seeking to topple his government.
"We cannot retreat now," Abhisit said on television.
The curfew would likely be imposed from Sunday from 11 p.m. to 5 a.m. in areas near the main protest site, said a government source close to Abhisit.
Analysts said the military appears to have underestimated the resolve of the protesters and has encountered prolonged resistance when trying to seal of roads and intersections leading to their main protest site.
The protesters remain defiant, demanding the resignation of the British-born, Oxford-educated Abhisit, who they accuse of colluding with Thailand's royalist elite and meddling with the judiciary to bring down previous elected governments.
"I will stay here. We will not flee," Jatuporn Prompan, a protest leader, told supporters in their 3.5 sq-km (1.2 sq-mile) encampment where at least 5,000 remain, including women and children, barricaded behind walls of tires, poles and concrete.
On Sunday, a protester was shot in the head by a sniper on Rama IV road on the outskirts of the main protest site.
Hundreds of the red-shirted protesters have gathered on the road in working-class Klong Toey district since Saturday, many suffering gunshot wounds as they confronted nearby troops, hurling petrol bombs, rocks and crude homemade rockets.
They are burning walls of kerosene-soaked tires to camouflage themselves in the billowing black smoke.
The bloodshed has been largely one-sided, as troops armed with automatic rifles easily dodge projectiles and open fire with automatic weapons. Some protesters have been killed by snipers positioned on the tops of office towers.
Soldiers can shoot if protesters come within 36 meters (120 ft) of army lines, said army spokesman Sansern Kaewkamnerd, adding more soldiers were needed to establish control.
No soldiers have been identified in the official tolls that show 24 people killed and 198 wounded.
Rain-slicked streets around the city remained tense. Near Victory Monument, where clashes took place on Saturday, a young man walking the street was shot in the head by a sniper's bullet, a Reuters witness said. He did not appear to be a protester.
Hundreds massed in the Klong Toey area, apparently a strategic attempt to distract the army from its main task of clearing protesters from Bangkok's commercial district, a popular tourist and shopping area they have occupied for six weeks.
A night earlier, thousands massed in the Klong Toey area, creating a makeshift stage in what could be a new protest site.
If the protesters manage to establish control of a new area of the city, this would complicate the military's operation that began on Thursday when a series of checkpoints were set up and renegade soldier Khattiya Sawasdipol was shot in the head.
Many protest leaders now face terrorism charges that carry a maximum penalty of death, raising the stakes in a two-month crisis that has paralyzed parts of Bangkok, stifled Southeast Asia's second-biggest economy and decimated tourism.
The protesters, who have adopted red as a protest color and broadly support ousted premier Thaksin Shinawatra, set fire to vehicles and hurled rocks at troops who set up razor wire across deserted roads on Saturday in the business district.
Red shirt leader Nattawut Saikua told thousands still hunkered down in their main encampment late on Saturday that reinforcements were coming.
"We have been contacted by leaders in several provinces that they will mobilize to help us pressure the government," he said.
The U.S. Embassy has offered to evacuate families and partners of U.S. government staff based in Bangkok on a voluntary basis, and urged its citizens against travel to
"Is the government successfully dispersing the crowd and progressing toward ending the crisis? The answer is no, not so far, and it's a long way to go," said Thitinan Pongsudhirak, political scientist at Chulalongkorn University.
However, the government's strategy of starving protesters out of their encampment was shows signs of having an effect.
Supplies of food, water and fuel were starting to run thin as the red shirt delivery trucks were being blocked, but they said they still had enough to hold out for days.
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