Authorities say a bone fragment found at a home once cared for by kidnapping and rape suspect Phillip Garrido came from a human.
Investigators searching for evidence linking Garrido, who was charged with kidnapping Jaycee Lee Dugard in 1991, to a series of unsolved murders said they found a bone fragment on the property next to Garrido's last week.
The bone fragment was discovered after officials brought cadaver dogs to the property. On Tuesday investigators confirmed the bone came from a human but cautioned about jumping to conclusions.
"The expert has determined that the bone fragment found in the backyard of Garrido's neighbor is probably human," said Jimmy Lee, the director of public affairs for the Contra Costa County Sheriff's Office. "It should be noted that it is not uncommon to find Native American remains in Contra Costa County."
The bone fragment was analyzed by an outside expert. The sheriff's office is requesting the state to examine the bone to see if it can develop a DNA profile of it, according to Lee.
Garrido and his wife, Nancy, were charged last week with kidnapping Jaycee Lee Dugard in 1991. They allegedly kept her captive in a backyard encampment of tents and sheds. They have pleaded not guilty.