Bangladesh Rangpur murder: Negative dope tests weaken police's drug motive theory
Synopsis
Bangladesh police's drug-motive theory in the brutal killing of a Hindu family of four in Rangpur has taken a major hit — dope tests on both accused came back negative. With a rights body already flagging gaps in the official account, the investigation is under serious scrutiny and a credible, forensic-backed explanation is yet to emerge.
Key Takeaways
Dope tests on accused Mugdha Das , 23, and Siddharth Das , 19, returned negative on 31 August , finding no traces of drugs in blood or urine samples.
Bangladesh police had claimed the accused killed the Chakraborty family after retired teacher Ganapati Chakraborty tried to stop them from using yaba on the rooftop.
The four victims — Ganapati Chakraborty (65), Pritilata Chakraborty (50), Agami Chakraborty Prarthi (23), and Priyam Chakraborty (12) — were found dead on 22 August , two days after the incident.
Rights body Ain o Salish Kendra (ASK) had flagged discrepancies between the police account and statements from victims' relatives and local residents following a fact-finding visit on 24–25 August .
ASK has called for a comprehensive, impartial probe based on physical, digital, and forensic evidence.
Dope tests conducted on the two accused in the Rangpur Hindu family murder case in Bangladesh have returned negative, delivering a significant blow to the Bangladesh police's preliminary theory that the killings were motivated by a drug dispute. The results, confirmed on Monday, 31 August, have intensified scrutiny over the credibility of the official investigation into the deaths of four members of a Hindu family in Rangpur city.
Dope Test Results and What They Mean
Rangpur Metropolitan Detective Branch (DB) Deputy Commissioner Sanatan Chakraborty confirmed on Monday afternoon that no traces of drugs were found in the samples of the two accused. 'We received the dope-test report of Siddhartha Das and Mugdha Das at around 2:30 pm today. The report states that no traces of drugs were found in their bodies,' he told Bangladeshi daily Prothom Alo.
The samples — collected from blood and urine — were taken on Sunday following court approval. Both accused, 23-year-old Mugdha Das and 19-year-old Siddharth Das, are currently lodged in Rangpur Central Jail.
The Police's Original Theory Under Scrutiny
Bangladesh police had arrested the two men on 24 August, claiming they planned and executed the murders after retired schoolteacher Ganapati Chakraborty allegedly tried to stop them from using yaba — a potent methamphetamine-based illicit drug — on the rooftop of his residence. The negative dope tests now cast serious doubt on this account, raising questions about whether the drug-use motive was ever substantiated by forensic evidence.
Notably, the police's version already faced pushback before the test results emerged. This is at least the second major credibility challenge to the official narrative within a week.
Rights Body Flags Discrepancies
Dhaka-based human rights organisation Ain o Salish Kendra (ASK) had earlier cast doubt on the police's preliminary account following a fact-finding visit to Rangpur on 24–25 August. In a press release, ASK described the killings as an 'extremely brutal incident' that had 'raised serious public concern,' and highlighted gaps between the official version and accounts from the victims' relatives, local residents, and media reports.
The organisation called for a comprehensive, impartial probe that relies on scientific analysis of physical, digital, and forensic evidence to establish the motive, sequence of events, and the identities of all those involved.
The Victims
The four deceased members of the Chakraborty family were identified as retired Rangpur Zilla School teacher Ganapati Chakraborty, 65; his wife Pritilata Chakraborty, 50; their daughter Agami Chakraborty Prarthi, 23; and their son Priyam Chakraborty, 12. The incident occurred on 20 August, with police recovering the bodies two days later on the night of 22 August.
What Happens Next
With the dope tests returning negative and a rights body already flagging inconsistencies, pressure is mounting on Bangladesh police to revisit their investigation and provide a credible, evidence-backed account of the killings. Whether authorities will order an independent probe — as ASK has urged — remains to be seen.
Point of View
But they do expose a troubling gap at the centre of the police's stated motive — if the accused were not on drugs, the entire trigger for the alleged confrontation unravels. Bangladesh police announced arrests within four days of recovering the bodies, a pace that often signals pressure to close a high-profile case rather than build one carefully. The fact that a credible rights body had already flagged inconsistencies before the forensic results came in suggests the investigation may have been shaped by a narrative rather than evidence. The Chakraborty family killings, involving a minority Hindu household, carry communal sensitivity; a flawed or incomplete investigation risks both a miscarriage of justice and deeper erosion of trust in Bangladesh's law enforcement institutions.
NationPress
31 Aug 2026
Frequently Asked Questions
What did the dope tests reveal in the Rangpur Hindu family murder case?
The dope tests of both accused — Mugdha Das and Siddharth Das — returned negative, with no traces of drugs found in their blood or urine samples. This directly undermines the Bangladesh police's theory that the killings were triggered by a dispute over yaba drug use.
Who were the victims in the Rangpur family murder case?
The four victims were retired Rangpur Zilla School teacher Ganapati Chakraborty (65), his wife Pritilata Chakraborty (50), their daughter Agami Chakraborty Prarthi (23), and their son Priyam Chakraborty (12). Their bodies were recovered on the night of 22 August, two days after the incident on 20 August.
What was the Bangladesh police's original theory about the killings?
Police claimed the two accused planned and carried out the murders after Ganapati Chakraborty tried to stop them from using yaba — a methamphetamine-based drug — on the rooftop of his residence. The negative dope test results have now cast serious doubt on this account.
What has rights body Ain o Salish Kendra said about the case?
Ain o Salish Kendra (ASK), a Dhaka-based human rights organisation, conducted a fact-finding visit to Rangpur on 24–25 August and flagged discrepancies between the police's version and accounts from victims' relatives, local residents, and media. It has called for a comprehensive, impartial probe using physical, digital, and forensic evidence.
What happens next in the Rangpur murder investigation?
With the dope tests returning negative and a rights body already raising questions, pressure is mounting on Bangladesh police to revisit and substantiate their investigation. Whether an independent probe will be ordered, as ASK has urged, remains unclear at this stage.
