Bangkok - A bomb, thrown early Thursday among anti-government protestors gathered at Makkahawan Bridge in Bangkok, injured at least nine people, one of them seriously, radio reports said.

The bomb was thrown at members of the People's Alliance for Democracy (PAD) who have been staging anti-government protests at Makkahawan Bridge since May, this year.

PAD core leader Chamlong Srimuang blamed the attack on the government.

He said that the attack would not stop the PAD from marching on the British Embassy in Bangkok Thursday to demand the extradition of former premier Thaksin Shinwatara.

The PAD is a loose coalition of conservative groups fanatically opposed to a return to power by Thaksin and his political allies.

On October 21 Thailand's Supreme Court for Political Office Holders found Thaksin guilty of abusing his powers as prime minister in 2003 by allowing his wife Pojaman to purchase a prime plot of land in Bangkok at a public auction.

Thaksin, who is living in exile in London with his family, was sentenced to two years in prison.

It is deemed unlikely that British authorities will extradite him to Thailand. (dpa)