article_snippet: Unsolved cases in Vermont, upstate New York, the San Francisco Bay area and Southern California are among those getting a new look, a U.S. law enforcement official said.
article_snippet: We have been aware of this connection for several years and have been working with various outside agencies as We follow this lead.
article_snippet: If information comes to We that allows We to further We investigation, then We will certainly take the opportunity to do that."
article_snippet: he's a lead we're following," Parris told the newspaper, "and with all the information we've learned about he, I'm not fully comfortable that I can eliminate he from we investigation at this point.
article_snippet: Investigators looking at other cases across the country have Investigators work cut out for Investigators, journalist Matt Birkbeck said.
article_snippet: But the investigation is nothing new, he said.
article_snippet: They've been looking at this for several years now," he said.
article_snippet: I guess with recent events, They've really expanded They scope.
article_snippet: CNN's Jean Casarez contributed to this report.