In pictures: Violence grips Thai protests

Police fired water cannons and tear gas at demonstrators, who were trying to breach barricades around government buildings.

Medical teams have been deployed to ferry those severely affected by tear gas to the hospital.

Some protesters, who are calling on Prime Minister Yingluck Shinawatra to step down, have been camping out near the United Nations complex in Bangkok.

Demonstrators covered their faces with plastic bags as tear gas attacks intensified.

Protesters have been hurling tear gas canisters back at police, along with stones.

Protesters handed out water, saline solution, wet towels, masks and goggles while advancing towards police.

The military(***)s medical unit was frequently called upon to attend to protesters hit by tear gas canisters.

At a makeshift treatment center near the democracy monument, protesters prepared herbal medicinal drinks.

At a cafe near the government house, some protesters watched the clashes with police on live TV.

Despite the violence, protesters say they will not quit.