He contacted the FBI last January through an attorney, setting in motion an intense probe of Theodore Kaczynski that ended in his arrest last week at the cabin. Officials already have detailed a collection of chemicals and other materials found in the cabin that they believe could have been used in producing explosives. They also have said they found one partially constructed and one live bomb inside the residence. Preliminary analysis on a third typewriter found in the cabin indicates a match with a letter written to the New York Times last year. However, officials said that further testing will be needed to make a positive match.
Testing is still underway on two other manual typewriters taken from the site.
Officials say they have not yet decided whether to charge Kaczynski with murder in bombs that killed three and injured 23 others over 17 years. They say officials are pondering whether to bring charges against Kaczynski initially in Sacramento, the site of the last bombing in April 1995, or in New Jersey. Cleary has been the New Jersey U.S. attorney's liaison to the Unabomber task force based in San Francisco since Mosser was killed in his North Caldwell, N.J., house by a package bomb that exploded in his kitchen while his family was getting ready to go buy a Christmas tree. For prosecutors, Mosser's slaying offers a strong and carefully preserved evidence trail and a state in which it could bring a federal death penalty case. Unlike some other Unabomb attacks, in which victims appear to be random, Mosser's killer took credit for the slaying, spelling out his motive for picking the high-powered executive in an April 1995 letter to the New York Times.