There have been more clashes in Bangkok as protesters tried to storm the prime minister’s office.

Thailand’s national security chief said they were alternating between using water cannon, teargas and rubber bullets.

Meanwhile a Thai court has issued an arrest warrant for anti-government protest leader Suthep Thaugsuban for “insurrection”, a charge punishable by “death or life imprisonment.”

Thai Prime Minister Yingluck Shinawatra has rejected protesters’ demands that she step down, but says she remains open to talks.

“We don’t want to have the violence, so please be confident that Thailand will not use any violence because it is a bad thing that happened in the past. We won’t let this happen again so that is why we are open to dialogue,” Prime Minister Yingluck said.

Protesters accuse Prime Minister Yingluck’s government of being controlled by her brother, leader Thaksin Shinawatra, ousted in a coup.

Four people have been killed and dozens injured in the country’s worst violence since the 2010 rallies in which an estimated 90 people were killed.