Published: May 19, 2011 9:54 PM EDT
Updated: May 19, 2011 9:54 PM EDT

CHICAGO (AP) - A defense attorney for "Unabomber" Ted Kaczynski  says he thinks the FBI is seeking his client's DNA simply to rule him out as a suspect in the 1982 Chicago-area Tylenol poisonings case that killed seven people.

John Balasz  says he's told the government they'll have to get a court order to get a DNA sample from Kaczynski.

Chicago FBI spokeswoman Cynthia Yates confirmed Thursday that the agency has asked for Kaczynski's DNA in connection with the Tylenol investigation.

Balasz says the FBI hasn't told him anything about what involvement they believe Kaczynski had in the case. He says he doesn't know if the agency considers Kaczynski a serious suspect.

Kaczynski is serving a life sentence after pleading guilty in 1998 to setting 16 explosions that killed three people.

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