ST. GALLEN, Switzerland (AP) _ A man who orchestrated a letter bomb attack that killed his teen-age daughter and crippled his ex-wife was sentenced Friday to 18 years in prison.

Norbert Stieger, 39, confessed to hiring someone to deliver the bomb to the home of his former wife in the northeastern town of Buchs in November 1996.

Rosemarie Stieger was suspicious about the package and called the alleged sender. While on the phone, her daughter, Nadja, opened the package and the bomb exploded.

The 13-year-old died a few hours later. Her mother, who had been near the explosion, was left almost blind and badly scarred.

Martin Glessman, the 32-year-old bomb-maker, was given a life sentence for the killing and for a 1992 murder in Austria. At the request of the owner of an apartment, he killed a tenant who was refusing to leave.

Stieger's brother, Martin, 32, was given a 9-year sentence for contacting the bomb-maker. Arms dealer Angelo Rutz, 46, who supplied the grenade that formed the basis of the device, received an 11-year sentence.

Prosecutors told the state court in St. Gallen that Stieger owed his ex-wife $60,000 in alimony.