Sex Offender Linked To 2003 Case?

(CBS/AP)  It's being called a long shot, but police in Minnesota say they're looking into whether convicted sex offender Joseph Duncan may be involved in the 2003 disappearance of 5-year-old LeeAnna Warner.

Duncan is already accused of kidnapping Shasta Groene, and killing her brother Dylan. In a blog, Duncan referred to LeeAnna's disappearance, writing, "Just found out that a five year old girl went missing from Chisholm MN...I tried to figure out what I was doing that day, since I'm always afraid of getting accused when something like this happens."

LeeAnna's father, Chris Warner, tells The Early Show co-anchor Hannah Storm he wonders why Duncan mentions his daughter.

"It seemed like it come up out of the blue," he says. "We weren't aware of this man prior to what he had done to Shasta and Dylan."

His wife, Kaelin, says just the idea of a possible connection is "very scary" for them now.

Chris Warner agrees: "It is real intimidating to know that this guy could have had possibly something to do with it. If we're able to link him to this area, I'm going to become more and more concerned for LeeAnna's safety, and I believe if this man had anything to do with her disappearance, her fate was sealed very early on after she disappeared."

And yet, he notes, this information is a lead.

"This is the first time we've had something concrete," he says. "We've had several different leads, but nothing that we can really go off of. It is scary to know that a man of this potential could possibly be involved with my daughter's disappearance."

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