A case was filed against seven people yesterday afternoon in connection with the killing two schoolgirls after rape in sadar upazila of the district, reports UNB. Father of one of the victims filed the case around 3pm, said officer-in-charge of Madaripur Sadar Police Station Ziaul Morshed. Earlier in the morning, Superintended of Police of the district Sarwar Hossain visited the spot. On Thursday, some unidentified miscreants allegedly killed the two girls after violating them in Sadar upazila. Officials at Sadar Hospital said four unidentified youths brought the two girls of Mustafapur High School to the hospital in a critical condition in the afternoon, claiming that the duo took poison to commit suicide. However, the girls, hailing from Mustafapur village, succumbed to their injuries around 5pm.