A man is dragged after being shot at Rama IV Street during clashes between army soldiers and anti-government Red Shirt supporters in Bangkok on May 15, 2010.
The United Front for Democracy, the formal name of the Red Shirt opposition, has been demanding that Minister Abhisit Vejjajiva dissolve the lower house of Parliament and call new elections. The Red Shirts support former Prime Minister Thaksin Shinawatra, who was ousted in a bloodless military coup.
Twenty five people have been killed in four days of street battles between anti-government protesters and soldiers.
An anti-government protester carries a tyre to put on burning barricades during clashes with Thai army in central Bangkok May 15, 2010.
A Thai army soldier and an army sniper (R) shoot during clashes with anti-government protesters in central Bangkok May 15, 2010.
Thai troops fired at protesters as soldiers struggle to isolate a sprawling encampment of demonstrators seeking to topple the government.
A Red Shirt protester who was wearing a fire-fighter's helmet lies next to a flag with a red cross after being shot by army soldiers during clashes at Rama IV Street in Bangkok May 15, 2010.
Anti-government protestors create a burning barricade on Rama IV road to stop army soldiers from advancing in Bangkok May 15, 2010.
An anti-government supporter slings a firework toward army soldiers along Rama IV road in Bangkok May 15, 2010.
A Red Shirt supporter rallies with Thai national flag from a 'tuk tuk' (local transport) after the Red Shirts secured parts of Rama IV road from army troops with a burning barricade of tyres in Bangkok.
Protestors set tyres on fire to block army soldiers from advancing along Rama IV road in Bangkok May 15, 2010.
A Thai media member looks at Thailand's Prime Minister Abhisit Vejjajiva's broadcast on television at a hotel in central Bangkok May 15, 2010.
Protesters have been 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.
An anti-government protestor runs past tyres set on fire by Red Shirt supporters trying to block army soldiers from advancing along Rama IV road in Bangkok May 15, 2010.
Red Shirt supporters carry a man who was shot in the head during clashes with army soldiers on Rama IV road in Bangkok, May 16, 2010.
A soldier mans a military checkpoint outside the barricaded anti-government 'Red shirt' encampment in Bangkok's shopping district May 16, 2010.
The Thai government threatened on Sunday to impose a curfew in Bangkok after three days of fighting that has killed at least 24 people and spiraled into chaotic urban warfare, with both sides calling for reinforcements.