10:24 PM PST on Wednesday, March 1, 2006

Shannon Sims / KREM.com

The murder of two California children took place during the time Joseph Duncan was on probation.

KREM 2 News

Now, Steve Groene, the father of abduction victim Shasta Groene, says his daughter may have to testify in criminal proceedings in California and an additional trial in Seattle.

KREM 2 News has learned it was 9-year-old Shasta who lead authorities to solve other missing children cases.

Steve Groene says alleged kidnapper and murderer Joseph Duncan told his daughter about the cases while he allegedly held her captive.

“Shasta basically told them right when they interviewed her when she was first found he had told her about killing a boy in California,” Groene said.

That boy was Anthony Martinez.

In 1997, the 10-year-old boy was abducted by knife-point in front of his Beaumont home.

Authorities found his body 90 miles away from the place he was last seen. The only evidence was a partial thumb print on a piece of duct tape. After Duncan's arrest, FBI agents received a court order to take full hand prints of Duncan.

krem.com

Nine-Year-Old Shasta Groene

“If he hadn't told Shasta, it would have never been linked him to that and get the full hand prints,” Groene said. “He could have gotten away with that in so many ways he had for 10 years.”

Shasta statements to investigators also helped crack a cold case in which authorities say Duncan was living near the motel during his probation. Their skeletal remains were later found in Bothell, Washington.

Sources close to the investigation has confirmed these details with KREM 2 News.

Duncan will face charges for these crimes after the murder and kidnapping trial in Kootenai County is complete.