Bishwajit Das, according to his autopsy, died of excessive bleeding from a single stab injury under the right arm.
Inspector Tajul Islam, investigation officer of the Detective Branch of police, on Monday received the autopsy report from Sir Salimullah Medical College (SSMC) morgue. He said the body bore one stab injury and some other marks of beating in different parts.
The 24-year-old was attacked on December 9 near Bahadur Shah Park in Old Dhaka by a group of pro-Awami League student body Chhatra League, who mistook him for a pro-blockade activist. He succumbed to his injuries at Mitford Hospital in the capital that day.
Maksudur Rahman of the forensic medicine department, SSMC, who conducted the autopsy, told The Daily Star that the stab wound was three and a half inches long and one and a half inches deep.
The lethal weapon had not reached the bone, he said. "The weapon cut his [Bishwajit] auxiliary artery, causing profuse bleeding. Other marks were not of major wounds."
Meanwhile, media reports about the autopsy findings stirred up criticism among different quarters. Doctors of SSMC also received a number of phone calls from people alleging that there was inconsistency between the report and what they had seen in TV footage.
Principal of SSMC Prof Dilip Kumar Dhar yesterday said they had also seen the video footage, police's inquest report and autopsy results and talked to doctors of the forensic department and experts.
"The police inquest report talks about one deep injury as we do. There is no scope for confusion," he said, adding the autopsy report was okay.
"Perhaps, other hits by lethal weapons could not create deep injuries as he was running to escape. He could have survived had the bleeding been stopped," Dilip said.
Bishwajit's brother Uttom Das told The Daily Star that Bishwajit had been wearing a thick vest at the time of the incident and that he also saw one deep cut in the body.