The FBI will question a 12-year-old Detroit boy who was missing for more than a week before police found him in his own basement, police said Monday.

The FBI "has scheduled a forensic interview" on Tuesday with Charlie Bothuell V, Detroit police said in a statement.

"Based on the outcome of this interview, the Detroit Police Department may be submitting a package to the Wayne County Prosecutor's Office as early as Wednesday afternoon," the statement said.

Police spokeswoman Officer Jennifer Morenotold The Associated Press in an email that the FBI plans to have a "kid's talk" with the boy, not administer a polygraph. She said the case remained a state rather than a federal matter.

Charlie's father reported him missing June 14. Officers found the boy last Wednesday behind boxes in the bowels of the multiple-unit condo building where he lived with father Charlie Bothuell IV and stepmother Monique Dillard-Bothuell.

Dillard-Bothuell was arrested Thursday on accusations of violating probation in an unrelated case involving firearms. She was released with an electronic tether.

According to a document obtained by the Detroit Free Press, the boy told investigators that his stepmother sent him to the basement and told him "not to come out, no matter what he hears."

The petition filed in Wayne County juvenile court by Children's Protective Services as part of a custody hearing said that Dillard-Bothuell placed the boy in the basement behind boxes and totes. It said the boy scavenged for food when his family was away.

"Charlie is currently staying with relatives," the police statement said. "His stepmother and father have been granted supervised visitation by the state."