Bengaluru, June 23 -- A 25-year-old woman and her live-in partner allegedly killed her parents and sister in their Bengaluru apartment on Monday night following a dispute over their relationship, police said on Tuesday.

The suspects, Shwetha and Kenneth (26), have fled the city and are being traced, police said.

According to the police, the couple had been living for the past two months at Sai Green Homes Apartment in Dominic Layout, Sigehalli, within the limits of the KR Puram police station.

According to the preliminary investigation, an argument erupted at 7.30pm on Monday before the couple allegedly attacked all three family members with sharp-edged weapons, police said.

"The initial investigation suggests that the parents objecte...