Three family members identified as Somasundar, Muthulaxmi, and Supriya were found stabbed to death in a Bengaluru apartment.
Police suspect the victims' elder daughter and her boyfriend are responsible for the murders following domestic tension.
The incident occurred on Monday night in Seegenahalli, within the K R Puram police jurisdiction.
Law enforcement teams are actively searching for the suspects who fled the scene after the attack.