A mail bomb which took the life of a Tennessee lawyer and his wife on Monday after detonating outside their home was found with a note attached as police continue their investigation, CNN reported.
The Tennessee Bureau of Investigation said Thursday that John Setzer, 74, was killed Monday after he carried the mail bomb from his mailbox about 200 yards away from the front of his home, where the bomb eventually exploded and kill him, according to CNN.
His wife, Marion Setzer, was critically injured and died on Thursday at Vanderbilt Hospital, CNN reported.
Investigators found a note among the debris which they believe came attached with the bomb, but would not release what it said, according to CNN.
"This is a very important piece of evidence, because now you may have handwriting," former ATF agent and bomb expert Joseph Vince told CNN.
The normally quiet neighborhood in Lebanon, Tennessee, was filled with the FBI, U.S. postal inspectors, the Department of Homeland Security and the Bureau of Alcohol, Tobacco, Firearms and Explosives who are all investigating the origins of the package, according to CNN.
Investigators are trying to discover whether the package was delivered by commercial delivery of a private carrier, CNN reported.
"It doesn't make sense at all," family friend Ken Caldwell told CNN affiliate WTVF. "When I've heard it said that it was targeted, I thought, well, they must have targeted the wrong person."
Officials are also testing items in the home, including labels and pieces of paper, to determine whether they were part of the package or perhaps previous deliveries, CNN reported.
Setzer's former law partner, George Cate Jr., said he was a dedicated servant and a pastor at "little country churches" and could not think of any reason why he or his wife would be a target of such a violent crime, according to CNN.
"I could hardly believe what I was being told because nothing had happened in my recent times to make me anticipate anything of this kind happening," Cate told CNN affiliate WZTV.
According to Cate, he and Setzer became partners at a law firm named after them between 1979 and 1991, CNN reported. Setzer has worked on general civil cases, bankruptcy, and also specialized in living trusts.