40-year-old Meenakshi Dutta Choudhury, an unmarried woman, along with 50-year-old old Saroj Ray, were found dead in a pool of blood in the woman's apartment in Patuli area, they said.
A bottle of poison was found beside the bodies, they said.
Preliminary investigations showed that the woman was having an affair with Roy, who was married and had two children. Roy went to Choudhury's house this morning and had an altercation with her.