DHAKA: The United Nations refugee agency said it was concerned by reports that Bangladeshi police had arrested Rohingya Muslim refugees fleeing a controversial island camp and that others were hurt in a protest about conditions there. Bangladesh has shifted 18,000 refugees out of a planned 100,000 to the low-lying silt island of Bhashan Char from squalid, cramped settlements on the mainland where 850,000 of them live.