Dale County Coroner Woodrow Hilboldt said Tuesday that he had not been able to confirm exactly how Dykes died because the man's body had remained in the bunker. An autopsy was to be conducted in Montgomery once the body was removed.
The boy, who has Asperger's syndrome and attention deficit hyperactivity disorder, was said to be acting like a normal kid after his rescue. And officials said there was no indication that Dykes had harmed the boy.
The boy was running around, playing with a toy dinosaur and other action figures, eating a turkey sandwich and watching "SpongeBob SquarePants," relatives and Dale County Sheriff Wally Olson said.
"We know he's OK physically, but we don't know how he is mentally," Betty Jean Ransbottom, the boy's grandmother, told The Associated Press on Tuesday. She added that she feared the ordeal would stay with the child the rest of his life.
The family was relieved and grateful for all the support in a community where ribbons, fliers and vigils all symbolized the prayers for the safe return of the boy, whom law enforcement officials have only identified by his first name, Ethan.
The boy's mother, in a statement released by authorities, expressed her thanks for all the hard work of so many officers to bring her son home. The woman declined to be identified, the statement said. During his captivity, his only comforts were a Hot Wheels car and other treats passed to him by officers.
"For the first time in almost a week, I woke up this morning to the most beautiful sight ... my sweet boy," she said. "I can't describe how incredible it is to hold him again."