The cold cases include the 1989 murders of two Reno children who vanished near their school bus stop.
Investigators are looking for similarities between numerous cases and Phillip Garrido's method of operation in the case of Jaycee Dugard, Reno police Lt. Mike Whan said. Dugard resurfaced last week in California after being snatched near her school bus stop in South Lake Tahoe, Calif., in 1991 at the age of 11.
"There might not be any link between the cases and him, but we'd be crazy not to look at the possibility," he said.
Jennifer and Charles Chia were kidnapped on the 100-yard walk from the bus stop to their home, Whan said. The remains of the 6- and 7-year-old siblings were found nine months later near Blairsden, Calif., about 60 miles northwest of Reno.
He said the cases under review either occurred around 1976, when Garrido kidnapped and sexually assaulted a 25-year-old woman while living in Reno, or in the several years after Garrido was paroled from a Nevada prison in 1988.
The 1976 victim - Katherine Callaway Hall - told police after that attack that Garrido said he had abducted two other girls, one from the San Francisco Bay area and one possibly from Las Vegas.
"Anything is possible with this guy," Whan said. "This guy would be a better suspect than others based on the prior crimes he has committed.
Garrido, 58, and his wife, 54-year-old Nancy Garrido, have pleaded not guilty to 29 counts of kidnapping, rape and false imprisonment in Dugard's disappearance.
Police say the Garridos held Dugard captive in a backyard encampment of tents and sheds in Antioch, Calif., and Garrido fathered two children with Dugard. Both Garridos are being held without bail.
Another unsolved Reno case under review involves 7-year-old Monica DaSilva, who was snatched from her bedroom as she slept in 1990. Her remains were found three weeks later east of Reno. Her killer has never been identified.
Whan noted the disappearances of DaSilva, the Chias and Dugard occurred in the same general time frame and area after Garrido's parole. Garrido admittedly had a process of finding females and committing sex acts with them, he said.
"During that time period we had those child abduction cases and since then we haven't had any," Whan said. "Kind of interesting."
Hall said Garrido told her the night she was repeatedly raped in 1976 that he had come to Lake Tahoe specifically for the purpose of abducting a girl.
"The whole scheme was planned for weeks," she said he told her.
A federal prosecutor testified at Garrido's 1977 trial that Garrido had tried unsuccessfully to kidnap yet another woman just an hour before he approached Hall.
