Authorities accused Ted Kaczynski of being the domestic terrorist responsible for more than a dozen bomb attacks in multiple states between 1978 and 1995 that killed three people and injured 23 others. The attacker, who called for the "destruction of the worldwide industrial system," was dubbed the Unabomber because many of his early targets worked at universities and airlines. Investigators zeroed in on Kaczynski after his brother, David Kaczynski, informed the FBI that a manifesto attributed to the Unabomber appearing in The New York Times and The Washington Post was similar to papers his brother had written. Ted Kaczynski was ultimately sentenced to life in prison without the possibility of parole.