Transcript for FBI joins search for missing Chicago boy
We turn now to the suburbs of Chicago and a 5-year-old boy who has vanished after going to bed. Search teams brought in, and the FBI is now involved. What we are learning about the case. Here's ABC's will reeve. Reporter: Tonight, authorities on the hunt outside Chicago, saying search dogs confirm the missing 5-year-old did not leave his home on foot. That home now a crime scene. The FBI and local police have been searching for A.J. Freund since he was last seen inside that residence Wednesday night. A.j.'s father made a plea to reporters outside their home. A.J., please come home. We love you very much. Reporter: But he initially waved off investigators. You come with us right now. I'm going to go get a phone. Okay. Then I'm going to come back. Reporter: He's also hired a lawyer. His wife, Joann Cunningham, retaining her own attorney. Joann came here today to stay hoping that A.J. Would come back at any moment and walk through the house. Reporter: Now she's stopped cooperating as well. Miss Cunningham cooperated with the police extensively yesterday until at some point, we got the impression that she may be considered a suspect. Reporter: Tom, police say they have no reason to believe that an abduction has taken place, and the family has denied any involvement in a.j.'s disappearance. There are reports that his father is now talking to investigators. Tom? Our newest correspondent, will reeve, on a very disturbing case tonight. All right, will. Thank you.
This transcript has been automatically generated and may not be 100% accurate.