kaczynski was arrested in his cabin on april 3, 1996. his brother, david, called the police so that they could arrest him. he pleaded guilty of his crimes on january 22, 1998. he is an inmate of adx florence, fremont county, colorado. on december 14th, 2021, he was moved from adx florence to the federal medical center, butner, north carolina, for his health. on february 7th, 2022, a pen pal of kaczynski announced that he had terminal cancer of the skin.