SOURCE: BBC News (5-19-11)
The US killer known as the Unabomber, Ted Kaczynski, has been asked to supply a DNA sample to police investigating the Tylenol poisoning which killed seven people in 1982.
The 68-year-old was jailed for life in 1998 after killing three people and wounding 23 others in a string of bombings over 18 years.
Chicago FBI said that a "re-examination of the evidence" had prompted the move.
Pain relief pills Tylenol were laced with cyanide, prompting a huge scare.
There was a huge recall of capsules from the shelves of pharmacies across the US.
In a statement on Thursday, Cynthia Yates of the FBI in Chicago said: "As part of our re-examination of the evidence developed in connection with the 1982 Tylenol poisonings, we have attempted to secure DNA samples from numerous individuals, including Ted Kaczynski....