The Justice Department gave a $1 million reward to David Kaczynski for turning in his brother, Theodore, as the Unabomber. He has said he would use the money to ease the grief of families victimized by his brother's bombs.

The decision to award the money to the Unabomber's younger brother was announced by Justice Department spokesman John Russell.The FBI had tracked the Unabomber futilely for 18 years before his capture in a remote, hermit's shack in Montana in April 1995. Agents involved in the hunt said they might never have found the reclusive ex-mathematics professor without the help provided by David Kaczynski.

David Kaczynski approached the FBI through an attorney after he read portions of the Unabomber's 35,000-word manifesto that federal agents had prevailed upon The Washington Post to publish. It reminded him of letters from his 55-year-old brother, who had moved to Montana after quitting a job at the University of California at Berkeley.

Kaczynski's trial ended in a plea bargain last January. In return for his guilty plea, the government, citing his apparent mental illness, agreed not to seek the death penalty. He was given four life sentences in May.

In 16 attacks between 1978 and 1995, the Unabomber killed three men and injured 29 others.