As the occupation of government buildings in Thailand enters night, the prime minister is extending the country's Internal Security Act.

This comes after protesters forced their way into the Finance, Foreign Affairs and Public Relations ministries.

Prime Minister Yingluck Shinawatra says the security act, which includes curfews and checkpoints, is to maintain peace and security for the people.

(SOUNDBITE) (Thai) PRIME MINISTER YINGLUCK SHINAWATRA SAYING:

"I have insisted that the government will not use violence against the people. We'll proceed according to the international standard."

The protesters accuse Yingluck of being a puppet for her brother, former Prime Minister Thaksin Shinawatra.

Thaksin was ousted in a 2006 military coup and convicted two years later of corruption.

He lives in self-imposed exile and not in prison.

Protesters say they are treated unfairly by the government.

(SOUNDBITE) (Thai) SOMCHAI KAOKAM, ANTI-GOVERN