The child appeared to be OK emerging from the ordeal Monday afternoon, the official said. Alabama state Rep. Steve Clouse told CNN that the boy was taken to a hospital in nearby Dothan.
One neighbor said he was outside when he was startled by the sound of an explosion.
"I head a big boom and then ... I believe I heard rifle shots," said Bryon Martin, who owns a home near the bunker where the boy had been held since Tuesday.
It was a loud noise that "made me jump off the ground," he said.
Two ambulances left the scene shortly before 4 p.m. (5 p.m. ET)
For the complete CNN story, go here.