Students at Bangladesh's Rajshahi university in the northwest are demanding a probe into the murder of one of their professors.
Police say unidentified assailants beat the professor to death. Police say the body of 58 year old geology professor Taher Ahmed was found in a sewer drain on campus on Friday , two days after he disappeared. Police say there were severe injuries to the back of the professor's head.
Three people are being detained for questioning. Different organizations of students and teachers are protesting against this gruesome killing.