On Tuesday, police announced the arrest of a suspect in the killing of a 10-year-old girl whose body was discovered on a Wisconsin walking route.
A city about 100 miles east of Minneapolis, Lily Peters, a fourth grader, was reported missing by her father on Sunday night.
Lily's bike was discovered in the woods near her aunt's house on Sunday night, according to authorities.
Kelm said the police detained an unidentified juvenile suspect on Tuesday evening who was not a stranger to the girl.
The suspect was known to the family, according to Kelm.