A magisterial court here on Thursday convicted Gujarat independent MLA Jignesh Mevani and nine others in a five-year-old case of holding an 'Azadi march' without permission and sentenced them to three months' imprisonment. Additional Chief Judicial Magistrate J A Parmar held Mevani and nine others, including NCP functionary Reshma Patel and some members of Mevani's Rashtriya Dalit Adhikar Manch, guilty of being part of an unlawful assembly, under section 143 of the Indian Penal Code.