According to witnesses, the kidnapper pounced when the school bus stopped to let off two children.
The authorities lowered medicine at one point into the bunker for the boy, with the kidnapper's agreement.
The kidnapper, Fernando Dutra Pinto, was arrested and died in prison a year later, of complications caused by sepsis.
FORBES: Meet TV Star Silvio Santos, Brazil's First Ever Celebrity Billionaire
His new scientific methods lead, in 1934, to the capture of Bruno Hauptmann, the kidnapper of the Lindbergh baby.
Mr Ziercke said that the girl had mistakenly identified the kidnapper's car for another, seen a little later, where there were indeed two men sat inside.
The kidnapper told Davis while he was building the bunker he wanted to hear people or passing cars coming in case he was trapped in the storm.
The problem is that everyone seems to engage not only his interest but also his sympathy: Fernando (Pedro Cardoso), the kidnapper on whose memoir the movie was based, is nagged by doubt, and even the secret-service agent who specializes in torture is unable to sleep at night.
Earlier Monday, a senior Egyptian government official told CNN that intelligence officers had visited with the alleged kidnapper, Germy Abu Masouh, on Friday and on Sunday, and communicated with him by phone.
Late Thursday night, that's where the child and his kidnapper remained -- with no sign the boy had been harmed, said Dale County Sheriff Wally Olson, but no indication a breakthrough was imminent, either.
One self-confessed kidnapper now runs the security services in one of Yemen's 17 provinces.
Mr Mbeki has promised to expel them, but he spent much of the campaign publicly hugging one of the worst: a convicted kidnapper, Winnie Madikizela-Mandela.
"She says the photo might be of a kidnapper whom she had taken to be a low-status guard, but couldn't be sure, " the Monitor article, slated for Friday editions, said.
Dugard, now 30, and her daughters, aged 15 and 12, filed claims against the state earlier this year for psychological, physical and emotional damages for failing to properly monitor her accused kidnapper, Phillip Garrido, a registered sex offender on parole and the alleged father of her children.
Both were members of the bureau's elite hostage rescue team, a group known most recently for rescuing an Alabama boy from a kidnapper in an underground bunker.
应用推荐