Two suspects arrested over the murder of a former schoolteacher, his wife and their two children in Rangpur have been taken to Dhaka for DNA sample collection.
Siddhartha Das and Mugdha Das were taken to the forensic laboratory of the Criminal Investigation Department (CID) in Dhaka on Sunday night, Rangpur Metropolitan Police Deputy Commissioner (Detective Branch) Sonaton Chakroborty said.
He said DNA samples of the two suspects would be collected at the CID laboratory and compared with biological samples and other evidence recovered from the crime scene and the victims, reports UNB.
Investigators have collected various pieces of evidence from the scene, and DNA analysis will help determine whether any biological evidence found there is linked to the two suspects, he said.
However, investigators said no conclusion could be drawn until the DNA test results were available.
The bodies of Ganapati Chakraborty, 65, a former teacher of Rangpur Zilla School, his wife Pritilata Chakraborty Bala, 50, daughter Agami Chakraborty Prarthi, 25, and son Ayush Chakraborty Priyam, 12, were recovered from their locked house in Machhuapara area of Rangpur city on 22 August.
Police said all four were strangled to death.
Police arrested Mugdha, 23, and Siddhartha, 19, from the same area the following day in connection with the killings.
The two suspects later gave confessional statements before a court under Section 164 of the Code of Criminal Procedure. Two witnesses, identified as Shimanto and Bidyut Das, also gave statements before the court.
