KHULNA: A case was filed with Khulna Kotwali Police Station yesterday following the murder of Sonia Rabbi Sultana Lipi, 35, daughter-in-law of ex-lawmaker of Khulna-4 constituency Molla Zalal Uddin, reports BSS. Molla, lodged the murder case as complainant accusing his nephew Molla Hedayet Hossain. Hedayet Hossain, son of Lukai Molla, is also the brother of the complainant.