Police launched the operation after the killing of refugee leader Muhib Ullah last month.
Bangladesh foreign secretary Masud Bin Momen (center) listens to a relative of slain Rohingya leader Muhib Ullah during a visit to the crime scene at the Kutupalong refugee camp in Ukhia, Cox's Bazar, Oct. 9, 2021.
Bangladesh police have arrested nearly 40 refugees, including many suspected of involvement with illegal weapons and drugs, since they launched a crackdown against criminality at Rohingya camps after community leader Muhib Ullah was slain last month, an official said Tuesday.