DETROIT -

Police sources confirmed for Local 4 that specialists from the FBI sat down with 12-year-old Charlie Bothuell for an interview Tuesday to give expert analysis on whether he has been abused.

Bothuell went missing for 11 days and was found by police in his parents' basement while his father Charles Bothuell IV was being interviewed live by Nancy Grace.

Court records show the 12-year-old said he's been abused and that his stepmother allegedly knew he was in the basement the entire time.

Charlie Bothuell IV, Monique Bothuell

Police sources told Local 4 his interview with the FBI went very well Tuesday and meaningful information has come of it. Detroit police requested FBI help, said Andy Arena, the head of the Detroit Crime Commission. He said police are building an ironclad case file.

"This is a very sensitive case," said Arena. "The fact that the Detroit Police Department asked for this assistance, it shows that there's something there and there's something they're trying to prove."

DPD will be handing over its investigation to the Wayne County prosecutor on Wednesday for a charging decision.

Top police sources told Local 4 police will be recommending charges of child abuse or child neglect.

Special section: Charlie Bothuell disappearance