The attorney of David Kaczynski, the brother of the man suspected of being the Unabomber, described the family's efforts in the case. Attorney Tony Bisceglie (Biss-SEGG-lee) told reporters that David had begun to suspect the possibility of his brother's involvement in the Unabomb case last summer, because Theodore had written letters and articles with themes and phraseology similar to the Unabomber, and because he had lived in parts of the country associated with the Unabomber. Bisceglie said that after the Unabomber's manifesto was published last year, David worked with a private investigator and a former FBI behaviour analyst before he went to the FBI. NPR's Nina Totenberg reports.

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