Around 200 freedom fighters joined a rally at Trishal upazila headquarters yesterday demanding immediate arrest of the killers of their fellow Abdul Matin.
Ex-commander of Mymensingh Muktijoddha Sangsad Anwar Hossain and several freedom fighters addressed the rally.
The speakers warned that they will go for tougher agitation if the killers are not arrested within one week.
Police recovered the throat-slit body of freedom fighter Abdul Matin, alias Matin Master, 69, of Khagati village on July 4, said Md Jakiur Rahman, OC of Trishal Police Station.
Family members had found Matin's body in a pond of his fish farm adjacent to his house that day.
The victim's son Mahmudul Hasan Mamun lodged a case with Trishal Police Station the same day, accusing unnamed people.