Addam Swapp, who blew up an LDS stake center in 1988 and engaged in a standoff with authorities that ended in the shooting death of a Utah Corrections officer, said Friday that he was sorry for his actions and now wanted to pursue peace.

Three members of a polygamist clan were convicted today on charges ranging from manslaughter to negligent homicide in the death of a law officer in a gunfight at the clan’s compound.

The polygamist leader John Singer was shot to death by law officers nine years ago, but he has been evoked constantly here at the murder trial of three young men who took up arms for his cause

A judge today sentenced four members of a polygamist clan to minimum prison terms for their roles in a church bombing and shootout in which a corrections officer was killed.

The siege began early Jan. 16, a few hours after the the Mormon Church’s chapel, half a mile from the compound, was bombed. The police talked by telephone with Mr. Swapp, who said the bombing had been an act of revenge against the church and the state for the killing by the police in 1979 of the polygamist clan’s patriarch, John Singer. Mr. Swapp told others that he had sought an armed confrontation to bring on the resurrection of Mr. Singer.