Anyone who loses their life in a just cause and struggle is a witness to the truth. That is the concept of martyrdom. The literal translation of Shaheed is Witness.You mean shaheed ho gaye aapki maloomat ke hisaab se ?
Definite possibility, was drugged by the Jail administration people probably. You are in their Dhimmi situation, you are powerless.
His family and a majority of the Jamaat senior party members believe this was the cause. RAW and their bootlicker Bangladeshis behind this.
I wouldn't be surprised if Bangladesh authorities are torturing and killing people.