The verdict was announced Sunday.
The death row convicts are Fishermen Association President of Shah Ali area Asgar Ali, ‘Selim’, ‘Alkas’, ‘Raju’ and ‘Khalil’.
Kadar Ali and Ruhul Amin Ledu have received the life terms. They have additionally been slapped with a fine of Tk 25,000 each, failing the payment of which the sentence will be increased by a year, the court has ruled.
Only Asgar was present at court during the verdict. The others are absconding.
In 2012, Basu was pushed off from a terrace and then shot and killed.
The verdict identifies Asgar as the chief culprit. Boundary dispute led to the incident, the court has said.
Prosecutor Saiful Islam Helal said the issue of selling of fish was another bone of contention between the two sides. But this did not come up during the course of the trial.