A Tennessee man was charged Thursday in the killing of his in-laws after a bomb exploded at their home this week, officials said.
Richard Parker, 49, was arrested at his home Thursday and was being held in lieu of $1 million bail, officials said. He was indicted on charges of first-degree murder and premeditated murder in the Monday bombing.
Jon Setzer, 74, a retired lawyer, died when the blast blew out several windows of his home in Lebanon, Tenn. His wife, Marion Setzer, 72, was flown to a Nashville hospital but succumbed to her injuries Wednesday evening.
Investigators said at a televised news conference Thursday they thought Parker was solely responsible for the attack, but did not give specifics on what evidence led them to him.
Investigators did not cite a motive for the bombing. They said they were running tests on the explosive materials, which appear to have been planted rather than delivered by a mail or package service.
Authorities did not identify Parker's spouse.
"Two people targeted for this kind of violence doesn't make sense at all," the Rev. Mike Ripski, senior pastor at First United Methodist Church in Lebanon, told the Tennessean newspaper before news broke of the arrest. ". . . The grief is deep, profound, because they were such wonderful people."