The ill-fated 13-year-old boy Sheikh Samiul Alam Rajon died from a brain haemorrhage, according to the autopsy report.
Akhtar Hossain, OC of Jalalabad police station, said they got the autopsy report on Monday afternoon.
A total of 64 injury marks were spotted on Rajon's body, the OC said quoting the report.
Rajon was tortured to death by a group of people at Kumargaon on the outskirts of Sylhet city around 7:30am on July 8.
Two of the tormentors Muhit Alam and his cousin Ismail Hossain Ablus have so far been detained in connection with the barbaric incident.
A Sylhet court has placed Muhit on a five-day remand on Monday in the case filed over Rajon's murder.
A 28-minute video, recorded on a mobile phone camera, shows the victim tied to a pole in front of a workshop in the still-closed Sultan Ali Market, beside the Dhaka-Sunamganj road. From the video, it seemed there were five to six men who took part in the barbaric torture.
Informed about the suspect, police went to the spot and took Muhit into custody and recovered Rajon’s body from a microbus. The body was identified by Rajon’s family at the police station on Wednesday night.
The elder of two brothers, Rajon was from Bade Ali village in Kandigaon union under Sylhet Sadar upazila, near Kumargaon.
His father Sheikh Azizur Rahman is a microbus driver. Rajon had studied up to Class VI before he dropped out of school and started selling vegetables to support his family, his father told the Dhaka Tribune.
On the day of the incident, Rajon left home early in the morning to sell vegetables as his father was out on a trip, said Rajon’s mother Lubna Akhtar.
As he did not return home all day, Lubna went to the police station that night to file a general diary. She was told there about a boy’s body found earlier in the day. Taking a look at the body, Lubna recognised it as her son’s.
A murder case was filed in this regard by Jalalabad police, in which Rajon’s father later became a plaintiff. Muhit was listed as the prime accused in the case, while his brother Kamrul Islam, 24, their accomplice Ali Haider, 34, and guard Moyna Miah, 45, were charged with murder as well.
