Columbia County jailers say defendants in two of Oregon's highest-profile recent crime sprees were carrying on a clandestine relationship behind bars.

Jail officials say Andrew Barnett, accused of perpetrating an anthrax hoax, and Holly Grigsby, charged in a three-state killing spree, traded love notes through the jailhouse library. The Oregonian reports ( http://bit.ly/XCY1Cm) that the scheme was uncovered last month, when a jailer found a four-page letter from Barnett hidden in a law book on a library shelf.

Jail supervisor Lt. Tony Weaver says Barnett's note was vulgar and sexually explicit, and it included a racist rant against the African American judge presiding over their cases.

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Information from: The Oregonian, http://www.oregonlive.com