SPOKANE, Wash. (AP) - A 4-year-old Spokane girl stopped breathing in the bathtub after her stepmother left her alone after forcing her to wash soiled items for more than 10 hours as punishment for urinating on herself, according to court records.

Summer Lytle suffered a pattern of abuse that included a dog-shock collar, burns to her face, a bite mark and extensive bruising extending from her upper thighs to the top of her head, court documents said.

Her father, Jonathan D. Lytle, 28, and stepmother, Adriana L. Lytle, 32, have been charged with homicide by abuse in Summer's death Saturday night. They remain in the Spokane County Jail on $500,000 bond each.

Court documents said that during police interviews, both Jonathan and Adriana Lytle admitted that they had severely punished Summer in the seven months the girl had lived with them.

"This included the use of a dog's training shock collar, beatings with leather belts, beatings with spoons and making Summer tear pizza boxes into tiny pieces," the documents said. "Both said the shock collar was used about five or six times, but did not seem to have the desired effect."

Meanwhile, the state Department of Social and Health Services on Tuesday released some information regarding its case files on Summer Lytle, and said more would be released later.

"What is very unfortunate about this case is that we did not receive any referrals alleging the severe abuse outlined in the court documents ...," said Martin Butkovich, regional administrator for children's services in Spokane. "It appears that the family did its best to hide the abuse from people who might have seen something and reported it to us."

The agency first came into contact with Summer and her father on June 1, 2005, when Jonathan Lytle notified DSHS that Summer was left in his care by her mother.

Summer's biological mother and father made allegations against each other, including sexual abuse and neglect, DSHS said.

The case was closed, and the family did not come to DSHS attention again until Summer was pronounced dead at a Spokane hospital, the agency said.

Jonathan and Adriana Lytle appeared Monday before Spokane County District Court Commissioner Charles Rohr. Jonathan Lytle kept his head down as Rohr read a police report describing the little girl's ordeal, including how he left the room to have a cigarette as Adriana Lytle was attempting to resuscitate Summer.

Adriana Lytle told a detective the girl had urinated on towels and clothes so she placed the girl in the bathtub to clean those items. The parents told police they made the girl wash items from about 10:30 a.m. until 9 p.m. Saturday, when Adriana Lytle pushed Summer with her foot "causing Summer to fall into the urine-filled water."

"Later in the evening, while Summer was again washing items out in the tub, Adriana found her unresponsive in the water," police records said. Both tried unsuccessfully to resuscitate her and Jonathan Lytle said he took Summer to Deaconess Medical Center, where she could not be revived.

Shortly after midnight Saturday, officers went to the Lytles' apartment, and were let inside by the manager.

"Officers made entry and found Adriana Lytle and her 8-month-old son in the apartment. Adriana Lytle commented, 'The reason I didn't answer the door is because Jon told me not to when the police came,"' court records stated.

Jonathan Lytle, a welder who moved to Spokane about 18 months ago from the Everett area, told officers that Summer's biological mother, who had custody of her, called in August and asked if Summer could stay in Spokane for a month with the Lytles, but never came back to get her.

Police were unable to contact or locate Summers biological mother until Tuesday. But investigators confirmed the mother lives in Poulsbo, Wash., and police arranged for her to be notified by her father.

"Jon said Summer is a difficult child and can be abusive to herself and had damaged the apartment on occasion," police reports said. "Jon said he was aware that Adriana had recently bitten Summer after Summer had kicked Adriana in the chin."

The reports said, "Adriana described Summer as defiant, a 'handful' and destructive and she wished Summer had never come to live with them."

An autopsy was being performed to determine what specifically killed Summer, Sgt. Joe Peterson said.