(CNN) -- A Pennsylvania woman charged in the November slaying of a man she and her husband met through Craigslist has told a newspaper that she killed many more victims, and authorities told CNN Sunday they are investigating the woman's shocking claims. A law enforcement source close to the investigation said Miranda Barbour's new claims could be "the real deal." "It's conceivable," the source said, who did not want to be identified because of the ongoing investigation. From prison on Friday, the 19-year-old Barbour told a reporter for the Daily Item in Sunbury, Pennsylvania, that she participated in at least 22 killings in the past six years in Alaska, Texas, North Carolina and California.
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Authorities tell CNN they are looking into Miranda Barbour's claims
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She tells the Daily Item in Pennsylvania she has participated in at least 22 killings
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"When I hit 22, I stopped counting," she is quoted as saying
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She and her husband are accused of luring a man and killing him in November
Greco says the @placeholder case is still moving forward, and a trial date has not been set.