A case has been filled against 275 people in connection  with the  gun attack on  a madrassa in Cox's Bazar’s Ukhia Rohingya camp that left six Rohingyas dead. Nurul Islam, father of victim Azizul Haque,  filed the case against 25 named people and  200-250 unnamed ones  at Ukhia police station, APBN Additional Superintendent of Police (Media) Kamran Hossain  said on Sunday morning. Read: 8 held over Rohingya camp gun attack APBN members have already arrested 10 people, including rive ‘ezhar’ listed accused,  in this connection, he said. On Friday, a  predawn gun attack on Darul Uloom Nadwatul Ulama Al-Islamiyah Madrasa at Cox’s Bazar Ukhiya Rohingya Camp left six  people dead. Police arrested a man named Muzibur Rahman  from the spot with a locally-made gun, 6 bullets and one knife. Read: Gun attack on madrasa in Cox’s Bazar Rohingya camp; 6 dead The other nine arrested accused are Dildar Mabud alias Parvez, 32, son of Abu Tayub of Camp-8, Mohammad Ayub, 37, son of Syed Ahmed; Ferdous Amin, 40, son of Nur Bashar of Camp 9 and Abdul Majid, 24, son of Zahid Hossain; Mohammad Amin, 35, son of Ali Ahmed of Camp-13; Mohammad Yunus alias Fayez, 25, son of Abu Siddique, Zafar Alam, 45, son of Elias of Camp 12; Mohammad Zahid, 40, son of Omar Miah and Mohammad Amin, 48, son of Nazi Ahmed's.

UNHCR, the UN refugee agency, has urged Bangladesh to take immediate measures to improve the security in the Rohingya camps, saying that it is "extremely concerned" by another violent attack there. "UNHCR is extremely concerned by another violent attack in the Rohingya refugee camps in Bangladesh," said the UN agency in a statement issued Friday night. Read: Gun attack on madrasa in Cox’s Bazar Rohingya camp; 7 dead This incident, which took place in the early morning, resulted in the death of at least seven refugees and an unspecified number of injured, including children, it said. Those with injuries are now receiving medical care. Read: Killings in Rohingya camp to disrupt repatriation: Foreign Minister The UNHCR also sought arrest and prosecution of those responsible for instigating and committing these violent attacks in accordance with the law. "Rohingya refugees fled to Bangladesh seeking safety and security from violence. A large majority – some 80 per cent – are women and children," the UN agency said.