Under the announcement, the ISA would be enforced across Bangkok.
Since October 18, the Internal Security Act (ISA) covered only three Bangkok districts; Phra Nakhon, Dusit and Pomprap Sattrupai.
In a special TV broadcast, Yingluck said her government has no choice but to use the ISA after the anti-government protesters stepped up their protests by invading, seizing many government agencies and destroying the assets including the front gates. The protesters also cut off electricity and water supplies in those buildings, the moves that would affect officials and people in general.
The political situations therefore badly affected peace as well as safety of people and their basic human rights.
The premier called for people not to provide cooperation with the protesters who broke the laws and to cooperate with officials so that the situation returns to normal.
She also insisted that in restoring control in the areas, the government assures no violence. International standards will be strictly followed, she said.
Yingluck also urges former Democrat MPs, who led protesters to government buildings, to solve conflicts through parliamentary procedure.
The protesters today entered the premises of the Foreign Affairs Ministry, the Finance Ministry, the Budget Bureau and the Public Relations Department.
Foreign Ministry spokesman Sek Wannamethee told NBT TV Station Monday night that all the rooms inside the building are locked, leaving only toilets for the protesters.
He said that when the protesters entered the premise, they promised not to break into the building.