Relatives and police using metal detectors and cadaver-sniffing dogs had crisscrossed the same area, digging numerous holes without finding a trace. But a searcher with a metal detector heard a faint click from the youth's long-buried watch earlier this month.
Searchers returned to the site at the direction of Stephen Hash, who pleaded guilty to Huntzinger's murder.
Dental records confirmed the boy's identity.
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