BANGKOK - THAILAND's former Prime Minister Samak Sundaravej on Tuesday resigned as leader of the ruling People Power Party (PPP) and the party will issue an announcement later, according to Xinhua news agency.

Samak, who was ordered to leave the Prime Minister Post after a court ruling on September 15 for violating the constitution by hosting two cooking shows on commercial television, submitted his resignation on Tuesday.

The Party will hold a press conference late on Tuesday, but a party source said Samak would not attend the conference, Xinhua said.

Samak still maintains his position as a Parliament Member of the PPP.