Police arrested a 29-year-old techie from Malda’s Kaliachowk on charges of murdering a woman with whom he was living in a rented apartment at Thakdari in New Town.

Debabrata Poti was arrested on Tuesday on the basis of a complaint filed by the woman’s brother.

An officer of New Town police station said Poti was in a live-in relationship with a 35-year-old woman from Jharkhand who worked in the same IT company.

According to the officer, the two had been staying together for four months.“On July 15, a fight broke out between the two. The woman suddenly fell unconscious. Poti took her to a private hospital off EM Bypass, where she was declared dead,” said the officer.

On Tuesday, the woman’s brother, Anand Mohan Singh, arrived in the city and filed a police complaint against Poti, the officer said.

“Initial investigations have revealed that the couple used to have frequent fights. We have started a probe,” said a senior officer of the Bidhannagar commissionerate.

The autopsy report of the woman is still awaited.