The main suspect in a quadruple homicide was shot dead by officers while responding to the scene, according to police .
42-year-old Mark Gago allegedly killed four people including a baby girl. The incident happend on Saturday around 10:15 p.m. when deputies responded to a domestic violence call and found the suspect trying to kill 9-month-old Olivia Gag. They then fired at him to save the baby's life, another woman has survived the shooting, Clackamas County Sheriff's office said.
The suspect and the victims who were identified as 31-year-old Shaina Sweitzer, 64-year-old Pamela Bremer and 66-year-old Jerry Bremer were reportedly lived in the same house.
The suspect has previously been in custody in August 2018.