The accused were initially booked under Sections 147 (rioting), 148 (Rioting, armed with deadly weapon), 188 (Disobedience to order duly promulgated by public servant), 353 (Assault or criminal force to deter public servant from discharge of his duty), 436 (Mischief by fire or explosive substance ), 506 (II) (Criminal intimidation) of the Indian Penal code and sections 3,4 of the Tamil Nadu Public Property (Prevention of Damages and Loss) Act (TNPPDL). On Sunday however they were booked under the National Security Act.