NAGPUR: A leading ammunition manufacturing firm in Nagpur in Maharashtra has told police its server faced a cyber attack last month, following which a First Information Report was registered, an official said on Thursday. The hacking attack on the server of Solar Industries India Limited, a top manufacturer of defence equipment, ammunition and explosives, took place on January 21 and a case was registered with Nagpur cyber police station on January 25, the police official said. A top official of the company confirmed the development but refused to give details.