
Police are obligated to complete such a request by allowing the PAD leaders to rebut the planned bail cancellation, chief criminal prosecutor Kayasit Pisawongprakarn said.
The public prosecutors asked police to take defence statements from the PAD leaders before refiling the request, he said.
The PAD leaders have been freed on bail pending the prosecution review of charges relating to their raids on Government House and the NBT broadcasting station on August 26.
The leaders are Chamlong Srimuang, Sondhi Limthongkul, Pipop Thongchai, Somkiart Pongpaiboon, Somsak Kosaisuk, Suriyasai Katasila, Chaiwat Sinsuwong, Amorn Amornratananont and Therdpoom Chaidee.
Activist Sudchai Boonchai petitioned police to revoke bail by accusing the nine of repeating serious offences following their temporary release. The capital's two major airports, at Don Mueang and Suvarnabhumi, are now under siege by the PAD.
Metropolitan Police commissioner Lt-General Suchart Muenkaew said that in accordance with police procedure the PAD leaders would be detained should police decide to disperse the crowds at the two airports.
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Calls increased yesterday for urgent talks between the government and protesters in case clashes led to violence.
Thammasat University lecturer Thirayuth Boonmee said that whether or not Prime Minister Somchai Wongsawat resigned or dissolved the House or the government dispersed the demonstrations, new rounds of protest would occur and major clashes could be expected eventually.
"Thai society has no solution. All paths lead to loss," he said.
The only solution is if both sides discuss how to prevent violence, he said; the government should accept political reform and not portray the anti-government People's Alliance for Democracy as villains.
Meanwhile the PAD should resolve to stop protesting to win public support, he said, noting that it had made many mistakes on this path and a halt would throw the onus on the government.
He said the government should give peace talks a chance before it moved in to disperse protesters, as it had many reliable negotiators. He said neutral parties should join in.
A military coup is not the right solution for political deadlock, he said, and could further sour Thai politics. He also rejected the notion that party dissolution would help and questioned the flaunted loyalty to the monarchy of both belligerents.
Senate Speaker Prasopsuk Boondet said he was apprehensive of violence; he urged negotiation and the evacuation of Suvarnabhumi and Don Mueang airports with no more ado.
A network for peace talks issued a statement calling on the government not to use violence against protesters.