Investigators have located a long-sought witness in the 1971 disappearance of Vancouver teenager Jamie Grissim and say new information has strengthened their belief she was a victim of serial killer Warren Forrest .

The Clark County Sheriff’s Office said in a news release Friday it’s canceled an “attempt to locate” bulletin for 72-year-old Matt McClure after cold-case investigators found and interviewed him. The bulletin, issued earlier this year, sought help from the public because McClure was believed to have information tied to a possible sighting of Grissim in the winter of 1971.

McClure was thought to be homeless in the community, and deputies said public tips were critical in tracking him down.

Investigators said they are not releasing details of the interview but that the i

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