DETROIT -

The state wants a court to terminate parental rights of a Detroit man whose 12-year-old son was missing more than a week before police found him in his own basement.

According to petitions obtained by Local 4 in the Wayne County juvenile court, Charlie Bothuell V told investigators he was beaten with a PVC pipe by his father and hit by his stepmother, as well as forced to complete multiple grueling workouts on a daily basis. Investigators are analyzing blood that was found on a PVC pipe.

READ: State of Michigan's custody petitions for Charlie Bothuell

"It was also disclosed Charlie was placed in the basement of the family home for 11 days by his stepmother, Monique Dillard-Bothuell," a petition states. "Charlie was threatened by Mrs. Dillard-Bothuell not to make any noise no matter what he hears. Mrs. Dillard-Bothuell reported Charlie V ran away from their home, but he was in the basement the entire time."

According the petition, Charlie claims he was denied food or water while made to stay in the basement. He told investigators that he snuck upstairs when he believed the house was empty to forage for food he didn't think his parents would notice missing.

"Charlie V reported Mrs. Dillard-Bothuell stated "she doesn't f'ing like me, and will f'ing murder me." She has also made additional statements, such as "unlike you, I know where the sharp knives are," and "I can make you disappear," according to the petition.

The petition also wants to terminate the parental rights for the family's other two children -- a 4-year-old boy and a 10-month-old girl.

A hearing is Thursday on whether to terminate Charlie Bothuell IV's parental rights and have the rights for the 12-year-old be given to his biological mother. No one has been charged in the disappearance.

Special section: Charlie Bothuell disappearance