BANGKOK - THAI Prime Minister Somchai Wongsawat on Tuesday rejected calls to resign and criticised protesters who are opposed to his elected government for leading a 'rebellion'.

Demonstrators besieged Mr Somchai's makeshift offices at a disused Bangkok airport terminal on Tuesday in the latest stage of a six month campaign against the premier and his administration.

The protesters, led by the so-called People's Alliance for Democracy, accuse the government of being a corrupt proxy for ousted former prime minister Thaksin Shinawatra, who is Mr Somchai's brother-in-law.

'The people are the ones who make decisions, because my government came from an election under the constitution,' Mr Somchai told the Thai National News Agency while on a flight back from an Apec summit in Peru.

'Anyone who wanted to overthrow or resist government is a rebellion,' he told the agency, in comments released by the Thai government.

'Whatever my decision is I will not make it alone,' he added.

Mr Somchai said he will call a meeting of security agencies upon his arrival in Bangkok on Wednesday to cope with the protests.

He also warned protesters not to shut down the main international Suvarnabhumi airport.

'Who will take responsibility in case damage occurs?' he said.

Mr Somchai and his cabinet have been based in offices in the former main airport at Don Mueang on the other side of Bangkok because protesters have occupied the government headquarters since August.

Separately a government spokesman said that all protest leaders would be prosecuted for their actions, adding that police had recorded the recent demonstrations and collected evidence.

'The government considers the protesters' action unconstitutional and undemocratic. Therefore law enforcement officials will prosecute them,' spokesman Nattawut Saikaur told reporters.

'The prime minister said if he has to quit it will be under the democratic process, and not under pressure from undemocratic protesters,' he said.

Mr Nattawut said the government was planning to go ahead with a cabinet meeting on Wednesday, but refused to disclose the location.

'There is no conclusion on the venue of the meeting but there are plenty of places ready to convene the cabinet meeting,' he said. -- AFP