A 6-year-old girl coming home from school on Thursday found her parents and the family's baby sitter dead in their Oakdale home.
Brady Hartman, a teenager who lives about four houses away, said he was outside when he saw the girl run out of the house sobbing and screaming, "Mommy, daddy dead! Mommy, daddy dead."
Brady's mother, Julie Hartman, said she called 911, then tried to console the little girl, who had blood on her hands.
"She touched her mom," Hartman said. "[She] kept saying, 'Where am I going to live? Where am I going to live?' I'm never going to see my mom and dad again. Can I come over to your house?"
Police aren't searching for a suspect in the killings and there is no threat to public safety, said department spokeswoman Michelle Stark.
On Friday Stark said the case is being treated as a double murder and suicide and that the three people died by gunshot.
As part of the investigation, police are checking the history of 911 calls from the home, she said.
The girl and her two brothers, ages 3 and 8, were staying with relatives, Stark said.