A case has been registered and police is suspecting that the youth, Sanjiv, first shot dead his neighbour, 25-year-old Seema, and later killed himself.
According to Ramesh, the husband of the woman, Sanjiv was harassing his wife for the last few days and used to send messages on her mobile phone.
They were found dead in the afternoon of August 18 in the woman's house.
"Police have recovered a country-made pistol, three bullets and a scissor soaked in blood from the scene of crime. Involvement of a third person is ruled out as the door was locked from inside," said SHO Inspector Bharat Bhushan.