Dhaka, May 18 -- The blood of another person has been found in a sample collected from the clothes of Sohagi Jahan Tonu, a student and theatre activist from Comilla Victoria Government College who was murdered a decade ago.

DNA tests have found that sperm and blood samples of four people were present on Tonu's clothes.

The current investigating officer of the case, Inspector Md Tariqul Islam of the Kalyanpur Office of the Police Bureau of Investigation (PBI), revealed on Sunday night that a letter was sent to the Criminal Investigation Department (CID) of the police a few months ago requesting details about the samples found on Tonu's clothes.

"It was reported about a month ago that, along with the sperm of three men, a sample of anoth...