Police in the Northern California city of Pittsburg say they have found no evidence to connect kidnapping suspect Phillip Garrido or his wife to several unsolved murders.
Following Jaycee Lee Dugard's reappearance last week after 18 years missing, Pittsburg police focused on Garrido in connection to the slayings of prostitutes in the 1990s.
Police spokesman Lt. Brian Addington said after four days of searching Garrido's house, backyard and a neighbor's yard, they found no clear link.
Addington said authorities will have to conduct further forensic examination on a few items they found to completely rule them out as evidence.
Authorities said Monday they found one small bone fragment in the neighbor's yard but did not know whether it was human.
Meanwhile, the Department of Corrections says it's reviewing its procedures after agency officials failed to detect that Dugard and two girls were allegedly living with Garrido, who is a registered sex offender.
Department spokesman Gordon Hinkle said Tuesday the agency is looking into the matter.
Garrido and his wife Nancy have pleaded not guilty to abducting Dugard and holding her captive in their backyard for 18 years.
Agents routinely knocked on the Garridos' front door during parole checks after Phillip Garrido was released from prison in 1988 for kidnap and rape.
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