Narayanganj police yesterday sought a 24-day remand for Hefajat-e-Islam leader Mamunul Haque in three cases filed with Sonargaon Police Station.    One of them is rape case, while two others are violence ones, said Hafizur Rahman, officer-in-charge of the police station. For all latest news, follow The Daily Star's Google News channel. In response, Narayanganj's Senior Judicial Magistrate's Court Ahmed Humayun Kabir set May 9 for hearing the petition, said Asaduzzaman, Narayanganj court inspector.