A mob beat up a doctor and his assistant at a “sealed-off” private clinic in Pabna’s Chatmohar upazila on Monday when they allegedly tried to flee from the operation theatre leaving a patient in critical condition. The patient Taslima Khatun, 35, wife of Ismail Hossain of Bothor in the upazila, died that night, said police. Officer-in-Charge Sheikh Nasir Uddin of Chatmohar