Police officers responded to a call about the sexual assault of a child and the fatal shooting of three teenage girls in a Houston, Texas suburb, Sheriff Ed Gonzalez of the Galena Park Police Department said in a statement.

At around 10:30 P.M., a 12-year-old girl reported that her mother’s boyfriend had shot her sisters and a friend, then sexually assaulted her. After the rape had occurred, the man told her to run. According to KHOU 11, the child then grabbed her 1-year-old niece and ran to a neighbor’s house for help.

When officers from Galena Park Police Department arrived to the home, they found the bodies of the three teenage girls. In another room, the 38-year-old suspect was found with a self-inflicted gunshot wound to the head. The mother, who was in a relationship with the child rapist and shooter, was not home at the time of the sexual assault and shooting.

Two of victims were the 12-year-old’s sisters: 13-year-old Melany Torres and 19-year-old Sayuri Gill. Sources say that Gill, the mother of the 1-year-old that was taken to a neighbor, was expecting her second child. The third victim was a friend of the family, a 14-year-old girl whose name has not yet been released.

“It’s just a tragic situation,” Sheriff Gonzalez said. “It makes no sense. It’s all senseless and it’s very tragic, but our investigators will try to put all the pieces together, and our condolences go out to the victim’s families and everyone impacted by this and the entire city as well.”