John DeBlase, 27, allegedly made these revelations during a thorough interview with police, leading investigators to search for the childrens' bodies within a 100-mile radius of Mobile, according to FOX10 News.
On Saturday, investigators planned to assemble a massive search party.
The children, Natalie, 5, and Jonathan, 3, were last seen with their father back in July. Since then, no family member came forward to report the children missing. Their stepmother, Heather Leavell-Keaton, was arrested Wednesday in Louisville, Ky.
"We received a call from the Louisville, Kentucky Police Department, stating that a man had walked into the police station up there and told them that there were some kids that were from Mobile that were dead," said Chris Levy, a police spokesman. The man was believed to be Leavell-Keaton's brother.
While he was being escorted to a police cruiser, DeBlase reportedly told the press that the stepmother did it.
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