Bangkok, Feb 26 (IANS): Thailand's National Anti-Corruption Commission (NACC) was besieged Wednesday by hundreds of pro-government United Front for Democracy Against Dictatorship members, better known as Red Shirts.

The Red Shirts locked up the gate of the NACC's office with chains to protest the latter's charges against caretaker Prime Minister Yingluck Shinawatra for alleged dereliction of duty, Xinhua reported.

Yingluck has been summoned to acknowledge the charges at the NACC Thursday.

But as Yingluck Wednesday embarked on a trip to the northeast provinces of Chiang Rai and Chiang Mai, which is expected to last one week, it remains unsure whether she will be able to show up at the NACC Thursday as required.

Earlier, Red Shirts chair Tida Tawornseth announced their new plans to resume political activities and target the anti-government People's Democratic Reform Committee, independent agencies, judicial system and any attempt to use the armed forces to stage a coup.

While in Chiang Rai, inspecting government projects, Yingluck reportedly called on the Red Shirts to exercise restraint.

She said the government wished to hold talks with protestors, rather than try to end the current political conflict by resorting to violence.