Kolkata: Police on Tuesday took the mother-daughter duo to their rented flat in the southern part of the city's Garia area and reconstructed the crime scene in connection with the alleged murder of a software engineer, a senior officer said.

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The daughter is stated to be the live-in partner of the deceased, Sarthak Sarkar.

A team of investigators, accompanied by forensic experts, reached the flat in Fartabad with the two women, where the sequence of events leading to Sarthak Sarkar's death in the intervening night of November 7 and 8 was recreated, he said.

"The accused have been taken to the flat to reconstruct the sequence of events. The forensic team has also collected samples from the premises, which will be examined as part of the investigation," an officer of Baruipur Police District said.

Sleuths suspect that a sharp, pointed object -- something like a chopstick or a hairpin -- was thrust into the neck of Sarkar, causing excessive blood loss and leading to his death, he said.

"The exact nature of the weapon, however, is yet to be established, as the object has not been recovered," the police officer said.

Sarkar, a resident of Barasat in North 24 Parganas district of West Bengal, was found dead at the flat in Fartabad, where he was living with his live-in partner, Sanchalika Basu.

Police have arrested Sanchalika and her mother, Moumita Basu, in connection with their involvement in the alleged murder.

Investigators have not yet established who inflicted the fatal injury, the officer said, adding that both Sanchalika, an engineering college student, and her mother had given contradictory and inconsistent statements during questioning.

He said that investigators were examining two possible sequences of events that may have led to the incident.

"One theory suggests that a dispute over payment of college fees triggered a heated argument between Sanchalika and her mother on Saturday night. Sanchalika allegedly informed Sarkar about the altercation, following which he reached the flat to intervene. The situation reportedly escalated, and he was attacked with a sharp object," the officer said.

The investigators are also probing whether the couple's strained relationship and mutual suspicion over their respective relationships had any bearing on the incident.

"Neighbours have told our officers that the two frequently quarrelled, though no conclusive evidence has emerged to establish a relationship dispute as the motive," he said.

Sleuths were also examining whether the incident was subsequently sought to be portrayed as an accident, he added.

"The forensic report will be crucial in determining the nature of the injuries and reconstructing the sequence of events," the officer said.

Moumita, who reportedly supplies equipment to beauty parlours, and her daughter remain under investigation.

Police have so far found no evidence pointing to the involvement of anyone else in the alleged murder, he said.

The victim's family has not made any public statement on the incident so far.

(Except for the headline, this story has not been edited by Mathrubhumi and is published from a syndicated feed.)