Lily Peters murder: Unsealed complaint reveals new details in Wisconsin girl's death

Chippewa Falls police said Lily's body was found in a wooded area on April 25

Editor's note: The following material is disturbing.

New details have been revealed in the murder of Lily Peters, the 10-year-old girl from Wisconsin who was found dead near her aunt's house.

The 14-year-old suspect is being charged as an adult, according to prosecutors.

In a criminal complaint unsealed Friday, the 14-year-old suspect is being charged with first-degree intentional homicide, first-degree intentional assault, and first-degree sexual assault of a child under age 13 resulting in great bodily harm, according to FOX 6.

LILY PETERS KILLING: JUDGE SETS $1M BOND FOR 14-YEAR-OLD SUSPECT CHARGED AS ADULT IN GIRL'S SHOCKING DEATH

Liliana "Lily" Peters, 10, was reported missing in Chippewa Falls, Wisconsin, around 9 p.m. Sunday, according to Matthew Kelm, the city’s police chief. (Chippewa Falls Police Department)

Lily Peters' father reported her missing at around 9 p.m. on April 24, and told authorities that she did not return home from her aunt's house. The father then spotted Lily's bike in Chippewa Falls in a wooded area, but a subsequent search of the area by police officers did not result in finding his daughter.

Police in Chippewa Falls were notified on the morning of April 25 that the victim's body was found near the area where the bicycle was. Investigators said that the injuries were consistent with blunt force trauma, according to the report.

LILY PETERS UPDATE: CHIPPEWA FALLS POLICE ANNOUNCE ARREST OF JUVENILE SUSPECT

Wisconsin police announced increased patrols around schools in Chippewa Falls Tuesday, two days after 10-year-old Lily Peters was murdered in the woods near the famed Leinenkugel’s brewery. (Chippewa Falls Police Department)

During an interview with police on April 26, the 14-year-old said that he asked Lily Peters to "go exploring off the trail."

When they were in the woods, the suspect "punched (Peters) in the stomach, knocking her to the ground," and hit her with a stick, according to the complaint.

The suspect told police that he strangled Peters and attempted to assault her after she was dead, according to the complaint. After Peters was dead, the suspect allegedly became scared and went home, where "he showered and put his dirty clothes in the laundry," according to the complaint.

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Officials search a wooded area next to the Jacob Leinenkugel Brewing Co. during an investigation of the homicide of Iliana "Lily" Peters, 10, in Chippewa Falls on Tuesday. Lilly's body was found about 9:15 a.m. Monday in a wooded area near the walking trail, according to police. (Dan Powers/USA Today Network-Wisconsin)

Upon hearing that Peters was missing, the suspect made the determination that "he needed to hide her better," and "returned to (Peters') body, drug her a few feet, and covered her with leaves."

The suspect's next court date is on June 24.

Fox News' Michael Ruiz contributed to this report.

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