Wood filed several appeals that were denied by the U.S. Supreme Court, including one on the basis that his First Amendment rights were violated when the state refused to reveal details of his execution such as the supplier of the drugs.
The Arizona Supreme Court also delayed the execution Wednesday morning to consider a last-minute appeal about whether Wood received inadequate legal representation at his sentencing. But about an hour later, the state's high court allowed the execution to proceed, the AP reported.
Wood argued he has a First Amendment right to details about the state's method for lethal injections, the qualifications of the executioner and who makes the drugs. Such demands for greater transparency have become a new legal tactic in death penalty cases.
The 9th U.S. Circuit Court of Appeals had put the execution on hold, saying the state must reveal the information. But the Supreme Court has not been receptive to the tactic, ruling against death penalty lawyers on the argument each time it has been before justices.
According to authorities, these were Wood's last words: “First I’d like to say thank you to Julie, Kevin, Dale, Deacon Ed and your offices who did everything to keep me from coming to this. I’m truly thankful – but when I accepted Jesus Christ as my savior in 2007, I knew this day would come. I am ok. I know whatever happens, I’ll be with my savior Jesus Christ and I take comfort in knowing that today my pain stops. I said a prayer, that on this, or any other day, you may find peace in your hearts. And may God forgive all of you.”
Richard Brown, a witness to the shooting and husband of Jeanne Brown, told reporters that "these people that do this, that are on death row, they deserve to suffer a little bit. This guy has been here for 25 years – getting medication, eating, roof, clothes, shoes - where’s them? They’ve been dead for 25 years. I saw the life go out of my sister-in-law’s eye as he shot her to death."
With reporting by ABC News' Ariane DeVogue. The Associated Press contributed to this report.