(KNZA)--A second suspect has pleaded guilty in the murder of a teenage girl at a popular St. Joseph park.

KQ2-TV reports 18-year-old Sebastian Dowell entered the plea Monday in a Buchanan County courtroom to a charge of second-degree murder in the death of 17-year-old Kaytlin Root.

Co-defendant, 17-year-old Amanda Bennett, pleaded guilty in February to the same charge.   Bennett told the court at the time that the killing was part of what she described as a demonic sacrifice.

Authorities say the pair lured Root to Krug Park in October where she was stabbed multiple times.

Her body was found near one of the trails at the park on October 16th.

Both Dowell and Bennett are to be sentenced in May.