He had been scheduled to be executed in November 2017, then a stay of execution was issued over concerns about another drug in the protocol. Dozier has said repeatedly he wants to die. And on Wednesday, Clark County District Judge Elizabeth Gonzalez "disallowed the use of the drug", effectively putting the execution on hold, The Associated Press reported.
However, a pharmaceutical company filed a lawsuit Tuesday against the Nevada State Department of Corrections over plans to use one of its drugs, midazolam, in the execution.
Scott Dozier, 47, was supposed to be dead later today.
The department of corrections will not comment on the case.
That case wound up in the Nevada Supreme Court, where the justices unanimously overturned the district judge's ruling in May, according to CNN affiliate KSNV.
The judge invited state Supreme Court review, saying she expected the Nevada execution to be closely watched by officials in states that have struggled in recent years to identify and obtain drugs from pharmaceutical companies that don't want their products used for the death penalty.
Family members of Dozier's victims are not expected at his 8 p.m. execution at Ely State Prison, 250 miles north of Las Vegas, Nevada prisons spokeswoman Brooke Santina said.
The document notes that midazolam (one of three drugs that were to be used in the lethal injection cocktail) "is not approved for use in such an application". Gonzalez set another hearing for September 10.
According to the nonprofit Death Penalty Information Center, a widely cited resource on the subject, Alabama, Arkansas, Florida, Ohio, Oklahoma and Virginia have all used midazolam in three-drug executions in recent years, with questionable results.
Alvogen said in a statement that it was pleased with the ruling and will continue to work through the legal system to ensure its products are not used in executions. The previous challenge, filed past year by a different company in Arkansas, was unsuccessful in halting that execution.
The drugs were ordered from one of the US's largest pharmaceutical distribution companies, Cardinal Health, which is among wholesalers facing a barrage of lawsuits accusing them of profiteering from the opioid epidemic by delivering vast quantities of prescription painkillers to small pharmacies and ignoring evidence they were being used by people addicted to the drugs.
The company argues that it would suffer "immediate and irreparable harm" should the execution proceed.
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A third company, Pfizer, previous year demanded Nevada return the third drug intended for use in the execution, the powerful opioid fentanyl. The state refused, however.
The sedative is expected to render Dozier unconscious before he is injected with the powerful synthetic opioid fentanyl, which has been blamed for overdoses nationwide but has not been used in an execution.
Jordan T. Smith, an assistant Nevada solicitor general, countered at Wednesday's hearing that Nevada didn't put up a "smokescreen" or do anything wrong in getting the drugs. It also said it "does not accept direct orders from prison systems or departments of correction".
"This whole action is just PR damage control", Mr Smith said of Alvogen.
Midazolam was substituted in May for expired prison stocks of diazepam, a similar sedative commonly known as Valium. The drug is meant to render the inmate unconscious.
Mr Bice said that Alvogen does not take a position on the death penalty itself but opposes the use of the drug in a way that is fundamentally contrary to the drug's goal - saving and improving patients' lives.
The drug was used in the execution of Joseph Wood in 2014, who took almost two hours to die, and led Arizona to stop using midazolam.
It was the American Civil Liberties Union of Nevada that sued and forced the state to release details about where it obtained its execution drugs.
Dozier, a twice-convicted killer who attempted suicide in the past, has said he prefers death to a life in prison.
In court hearings and letters, he said there is a limit to how much artwork and exercise a person can do in prison.
Mr Miller had come to Nevada to buy ingredients to make meth. Miller's torso was found inside of a suitcase dumped in a trash bin on West Flamingo Road.
Last year, Dozier dropped his death penalty appeals and asked to be executed. A witness there testified that Dozier used a sledgehammer to break Greene's limbs so the corpse would fit in a plastic tote that Dozier used to transport methamphetamine, equipment and chemicals.
Nevada's last execution was in 2006.