Family of deceased Rabiul Biswas, who was allegedly put to death by being drowned in Rajbari's Kalukhali upazila early Saturday, yesterday filed a case over the murder against some 10 people, but surprisingly without accusing any policemen.

Earlier, the family told different media that several police officials, including SI Fazlul Haque, picked Rabiul up from his house and handed him over to some alleged drug peddlers before the killing.

Rabiul's wife Sabana Akter filed the case with Kalukhali Police Station accusing five named and some four to five unnamed people.

The named accused are Islam Kha, 65, Rafiq Mondol, 40, Md Moslem, 31, Elias Mondol, 28, and Rakib Hossain Mondol, 21, said Kamrul Hasan, officer in-charge of Kalukhali Police Station, adding that they were trying to arrest the accused.

The victim Rabiul Biswas, 32, was the son of Ashiruddin Biswas from Betbaria village in Kalukhali.

According to the case statement, Elias, Rafiq and Rakib had a feud over land with Rabiul.

They stormed Rabiul's house to assault him and his brother Akter Biswas around 12:20am on Saturday.

As the two brothers tried to escape the scene, the attackers chased them and were able to catch Rabiul around 2:00am.

Later, they drowned him in Munaiyer Beel, the statement reads.

This correspondent tried several times to have the family's comments on the fact that why they have changed their earlier version of the incident in the case statement, but failed as two of their available contact numbers were found switched off. 

Meanwhile, the superintendent of police in Rajbari yesterday formed a three-member committee to investigate the incident.

The SP also formed a three-member committee headed by Md Salauddin, additional superintendent of police in Rajbari, on Saturday to investigate the incident as allegation surfaced against a few policemen.

The committee has been asked to submit a report within three working days.

Rajbari SP Mizanur Rahman told the Daily Star that they have analysed the CCTV footage of Kalukhali Police Station and found that the policemen in question were inside the station during the time of the murder.

"We have taken the matter seriously and hope we would able to reveal the secret," he said.

Riyadul Kabir, additional DIG of Dhaka Range, yesterday visited the spot and talked to locals and the victim's family members, the SP said.