The couple's children will live with memory of bloody scene all their lives, a trauma expert says.
The shooting scene at the blue split-level house, which involved two parents and a babysitter, left other victims as well. A 6-year-old girl returning home from school Thursday found the bodies and ran screaming into the street with blood on her hands. She and her two brothers, ages 3 and 8, were left orphaned.
"When I heard the child found the bodies it really did break my heart," said Washington County Attorney Pete Orput, who expects the county might be asked to help with foster care. "I don't know what it would be like walking in to see your mom and dad dead. That's something that child will never get out of her head, ever."
The dead were identified as Cintia Guadalupe Ornelas Bustos, 28; Jaime Anival Almaras Velasquez, 32, and babysitter Angela Uscanga Gonzalez, 43.
Police declined to say who was responsible for the shooting because the investigation is not complete. But the medical examiner's office has determined that Velasquez committed suicide, said officer Michelle Stark.
A handgun and spent ammunition were found inside the house on the 7000 block of 13th Street.
Stark said that "the crime appears to have been entirely contained inside the residence" and that police weren't looking for additional suspects "at this time."
It was Oakdale's first homicide since 2007, when 17-year-old Nicole Beecroft stabbed her newborn baby to death. She is serving life in prison. The only other homicide there in the past 25 years was in 1986 when Gloria Oursland, 49, was found beaten to death.
Oscar Amparan, a pastor who counseled the Oakdale couple, said Thursday that Velasquez was "a little violent" and had previous problems with alcohol.
Bustos and Velasquez had three children together but the legal status of their relationship hasn't been confirmed, Stark said.
The youngest boy reportedly was inside the house when the shootings occurred, while the older boy was outside when his sister discovered the bodies. Police responded at 4:12 p.m.
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." His mother, Julie Hartman, tried to console the little girl.
"She is going to have a lot of trauma," Julie Hartman said. "She went in there. She had blood on her hands."
As police took the three children away, the 3-year-old boy could be heard saying over and over, "momma dead, momma dead," Hartman said. "He was in there alone."
The violence shook the congregation at Iglesia Apostolica De La Fe En Cristo Jesus in Minneapolis, which Bustos and Gonzalez attended for seven years. The church at 1534 E. 24th St. is small -- just 21 pews in all. Maps of Guatemala and Mexico grace the back walls.
The children currently are staying with relatives.
