BLUFFTON, Ind. (WOWO): Another guilty plea in the death of three-year-old Owen Collins.

Wednesday in Wells Circuit Court, the teen who helped watch the boy, agreed to a plead guilty in the case. Sixteen-year-old Zachary Barker  was facing adult charges of abuse of a corpse, dealing meth and other charges – including helping dispose of the boy's body in a Wells County woods days after his death.

He lived with the boy's mother, 21-year-old Breanna Arnold and her 31-year-old boyfriend Zachary Barnes. Earlier Wednesday, Arnold had her trial date set for January 25. Barnes admitted his guilt this summer and was sentenced to 50 years in prison in early August. 

The couple admitted they exposed the boy to meth, but the coroner later ruled the boy died from blunt force trauma.