DICKSON COUNTY - The Tennessee Bureau of Investigation says it believes a father killed his 5-year-old son with autism who has been missing for days.

TBI announced Saturday morning its investigation resulted in the arrest of Joseph Ray Daniels. TBI and the Dickson County Sheriff's Office say Joseph Ray Daniels confessed, but they could not go into detail about that confession due to the ongoing investigation.

Joe Clyde Daniels was reported missing the morning of April 4th. Law enforcement officers and rescue crews began an exhaustive search near his home.

On April 6th, TBI agents changed their focus to a criminal investigation. It was determined that Joseph Daniel intentionally killed his son the night of April 3rd or 4th in their residence and then hid his son's body.

Daniels was arrested this morning and booked in the Dickson County Jail on a one million dollar bond. He is charged one count criminal homicide.

The search for Joe Clyde's body continues as the search now becomes a recovery mission.

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"It's a devastating end to this, with our hope being it would be a safe rescue," said Dickson County Sheriff.

Anyone with information regarding the whereabouts of Joe Clyde Daniels is asked to call 1-800-TBI-FIND (1-800-824-3463), or contact the Dickson County Sheriff’s Office at 615-446-8041 ext. 0.