The Internal Security Act will be enforced from March 11 to 23 throughout Bangkok and Nonthaburi and certain districts in Pathum Thani, Samut Sakhon, Samut Prakan, Nakhon Pathom, Chachoengsao, and Ayutthaya.

The Cabinet, during its meeting on March 9, approved the enforcement of the 2008 Internal Security Act ahead of the mass rally of the United Front for Democracy against Dictatorship (UDD), from March 12 to 14. The decision is deemed necessary as a precautionary step to ensure law and order, following the assessment by the Situation Monitoring Committee. The red shirt movement had announced that it would mobilize a great number of people to join the mass rally.