Skip to main content

Alabama modifies execution chamber for gas executions involving nitrogen hypoxia

Alabama is actively modifying its execution chamber to kill prisoners via nitrogen hypoxia, an untested method that would asphyxiate the condemned through a gas chamber or gas mask.

A federal judge last month ordered the Alabama Department of Corrections to provide information about the hypoxia protocol in an ongoing lawsuit filed by a man petitioning the court to have his spiritual advisor present at his execution.

"The ADOC is nearing completion of the initial physical build for the nitrogen hypoxia system and its safety measures. Once the build is completed, a safety expert will make a site visit to evaluate the system and look for any points of concern that need to be addressed," Alabama Attorney General Steve Marshall said in a Tuesday court filing. 

ADOC on Wednesday declined to answer a number of questions regarding the "physical build" referenced in court documents, including whether it intends to use a gas chamber or a gas mask to administer an execution method that has yet to be tested on human beings. 

"The ADOC’s nitrogen hypoxia execution protocol is still under development, and the physical building modifications to the execution chamber are still in process," the department said in a Wednesday statement. "Due to the fact those two items are not yet in a finalized state and potential security concerns exist, that is all we are able to share at this time."

Alabama passed nitrogen hypoxia legislation in 2018, one of only three states to legalize the method of execution. In theory, a condemned person would inhale pure nitrogen, which would asphyxiate them. 

The legislation, which proponents argued offered a more humane method of execution, effectively ended an ongoing lawsuit over lethal injection in Alabama. The legislation provided people incarcerated on death row a short window in 2018 to opt in to the method. 

But the new law codified a largely hypothetical method of execution. The method has never been tested on humans, and much of the scientific record on the subject comes from veterinary science or hazard investigations, where humans accidentally died in industrial accidents or similar situations. 

In Oklahoma, nitrogen hypoxia executions have technically been legal since 2015, but  last year the state said it would revert to lethal injections. In 2019, The Oklahoman reported multiple manufacturers declined to be involved in the execution process, with at least seven companies declining to sell the necessary "gas delivery device."

"The big issue with nitrogen hypoxia is it is experimental," said Robert Dunham, director of the Death Penalty Information Center. "We just have no idea whether it's going to work the way its proponents say it will. If it does, then there may be a viable alternative to lethal injection. If it doesn't, it may be just another method that was advertised as being humane that turns out not to be. It's completely unethical to experimentally kill someone, so we won't know. ... Nobody knows, nobody has indicated how its going to be carried out, though I suspect the death mask is more likely than a gas chamber. There was never any indication that Oklahoma intended to construct a gas chamber."


Multiple pharmaceutical companies have blocked purchases of lethal injection drugs in recent years amid growing opposition to the death penalty, leading some states to revert to alternate methods. 

New legislation in South Carolina resurrected the firing squad, though the state hasn't killed a prisoner in a decade, according the NPR. 

A Guardian investigation found Arizona recently purchased materials to kill condemned prisoners with cyanide gas, the same method used at the Auschwitz concentration camp during World War II. 

Arizona has "refurbished" an old gas chamber for the executions. Like Alabama, Arizona prisoners can choose between lethal injection or the gas chamber, though executions have been halted in the state for nearly a decade after a botched injection attempt. 

Source: montgomeryadvertiser.com, Melissa Brown, June 10, 2021


🚩 | Report an error, an omission, a typo; suggest a story or a new angle to an existing story; submit a piece, a comment; recommend a resource; contact the webmaster, contact us: deathpenaltynews@gmail.com.


Opposed to Capital Punishment? Help us keep this blog up and running! DONATE!



"One is absolutely sickened, not by the crimes that the wicked have committed,
but by the punishments that the good have inflicted." -- Oscar Wilde

Most viewed (Last 7 days)

Tennessee | Questions Raised About the Doctor Who Was Overseeing Tony Caruthers’ Execution

Mark Fowler, according to a deposition, had not placed a central line in a patient for more than a decade when he attempted to put one in Carruthers Around 11 a.m. Thursday morning in the execution chamber at Riverbend Maximum Security Institution in Nashville, a medical doctor stepped in and attempted to place a central IV line in Tony Carruthers’ chest. By that point, the prison staff had spent some 30 minutes trying unsuccessfully to insert a backup IV line that would allow them to proceed with the lethal injection. According to Carruthers’ attorney Maria DeLiberato, who was in the room, after asking a staff member to attempt inserting a line through Carruthers’ jugular vein, the doctor moved on to the central line, which is identified as the last resort in Tennessee’s lethal injection protocol .

EU GSP+ Reform: Will Brussels Finally Enforce Its Own Conditions on Pakistan?

The EU has tightened the rules governing GSP+ trade preferences, but Pakistan’s record raises a harder question: whether Brussels is prepared to suspend market access when a major beneficiary fails to demonstrate sustained compliance with human rights, labour and governance obligations. The European Union has formally adopted revised rules for its Generalised Scheme of Preferences, strengthening the conditions attached to preferential market access for developing countries. The new framework will apply from 1 January 2027 and is intended to tighten monitoring, widen the list of international conventions, and make suspension of benefits easier in cases of serious violations.

Florida executes Richard Knight

Man convicted of killing a woman and her 4-year-old daughter is executed in Florida  A Florida man convicted of fatally stabbing his cousin’s girlfriend and the couple’s 4-year-old daughter was put to death Thursday evening, becoming the 7th person executed by the state this year.  Richard Knight, 47, was pronounced dead at 6:13 p.m. following a 3-drug injection at Florida State Prison near Starke. Knight was convicted of 2 counts of 1st-degree murder in the June 2002 killings of Odessia Stephens and her daughter, Hanessia Mullings.  The curtain of the death chamber went up promptly at the scheduled 6:00 p.m. execution time. Knight was already strapped down with his arms extended and an IV line in place. 

Iran executes Esma Zarei in Ardabil Prison after she gave birth in custody

Hengaw – Saturday, May 23, 2026. Iranian authorities have executed Esma Zarei, a 28-year-old Turkish woman from Parsabad in Ardabil Province, who had previously been sentenced to death on charges of “premeditated murder” in connection with the killing of her husband. She is the sixth woman executed in Iran since the beginning of 2026. According to information received by Hengaw Organization for Human Rights, Zarei was executed at dawn on Wednesday, May 20, 2026, in Ardabil Central Prison. She had been sentenced to qisas (retribution-in-kind) after being convicted of her husband’s murder.

Tennessee fails to execute Tony Carruthers after IV difficulties. State won't try again for a year

NASHVILLE, Tenn. (AP) — Tennessee officials on Thursday called off the lethal injection of Tony Carruthers, who was convicted of kidnapping and murdering three people in 1994, after his executioners tried and failed for over an hour to establish an intravenous line. Gov. Bill Lee announced soon afterward that the state would not try again for at least a year. In a written statement, the Tennessee Department of Corrections said medical personnel had quickly established a primary IV line but were unable to find a suitable vein for a backup line as required by the state’s execution protocol. Efforts to insert a central line also failed, and officials called off the execution.

Arizona executes Leroy McGill

Arizona executes inmate who set couple on fire in 'horrific attack' Arizona has executed Leroy McGill for setting 21-year-old Charles Perez and his 24-year-old girlfriend on fire. Perez died the next day and Perez survived with severe burn injuries.  Arizona has executed a death row inmate for setting 2 people on fire more than 20 years ago, killing 1 of them and changing the other's life forever.  The state executed Leroy McGill, 63, by lethal injection on Wednesday, May 20, for the 2002 murder of 21-year-old Charles Perez. McGill set Perez and his girlfriend on fire after they accused him of theft, court records say. Perez died of his injuries the next day while his girlfriend survived with severe burns. 

20 Minutes to Death: Witness to the Last Execution in France

The following document is a firsthand account of the final moments of Hamida Djandoubi, a convicted murderer executed by guillotine at Marseille’s Baumettes Prison on September 10, 1977. The record—dated September 9—was written by Monique Mabelly, a judge appointed by the state to witness the proceedings. Djandoubi’s execution would ultimately be the last carried out in France before capital punishment was abolished in 1981. At the time, President Valéry Giscard d'Estaing—who had publicly voiced his "deep aversion to the death penalty" prior to his election—rejected Djandoubi’s appeal for clemency. Choosing to let "justice take its course," the President allowed the execution to proceed, just as he had in two previous cases during his term:   Christian Ranucci , executed on July 28, 1976 and Jérôme Carrein , executed on June 23, 1977. Hamida Djandoubi , a Tunisian national, was sentenced to death for killing his former lover, Elisabeth Bousquet. He was execu...

Florida: The Daily Routine of Death Row Inmates

The breakfast carts rattle through the concrete prison at about 5:30 am and as they approach Death Row the first sounds of morning repeat the last sounds of night - remote controlled locks clanging open and clunking closed, electric gates whirring, heavy metal doors crashing shut, voices wailing, klaxons blaring. A maximum security prison has no soft or delicate sounds. At the end of each corridor of death row cells a guard opens a heavy door of steel bars and a prison trusty pushes a breakfast cart inside. The door closes behind him and when it locks a second door opens and admits the trusty to the wing. He steers his cart along the wing stopping at each cell to pass a tray of powdered eggs and lukewarm grits through a small slot on the bars. Food is prepared by prison staff and transported in insulated carts to the cells. The food carts are full of cockroaches, the food is often undercooked or just rotten and is served on Styrofoam plates with a plastic "spork" - fork/spoon...

Iraq: German schoolgirl, 17, turned jihadi bride escapes death penalty and is jailed for six years

GERMAN Jihadi bride Linda Wenzel has been jailed for six years in Baghdad for her role as an Islamic enforcer with terror group ISIS. Wenzel, 17, who last year sobbed on TV “I have ruined my life,” could have faced the death penalty. German media reported that a German embassy representative in Iraq was in court yesterday to witness her sentencing. She received five years for joining IS and one year for entering Iraq illegally. Wenzel was found in the rubble of IS stronghold Mosul back in the summer of 2017. Charges were laid against her and three other German women captured with her. Schoolgirl Wenzel fled to Turkey then into Syria last year from her hometown of Pulsnitz in eastern Germany after being groomed online by a Chechen IS fighter who she married. He was killed in the savage fighting for Mosul while she was employed by the terror group enforcing the strict Islamic dress code on women in the city. She burst into tears after her capture and said s...

New Mississippi billboard warns criminals: ‘Firing squad is legal’

DESOTO COUNTY, Miss. (WREG) — A billboard standing on Interstate 55 southbound as you cross the Tennessee state line and enter Mississippi from Memphis is sending a grim message to those coming into the state. DeSoto County District Attorney Matthew Barton recently announced the new billboard campaign, which features the sign reading, “WELCOME TO MISSISSIPPI. WHERE THE FIRING SQUAD IS LEGAL. THINK TWICE.” It references Mississippi’s law permitting execution by firing squad under certain circumstances for inmates sentenced to death. Barton says this campaign is aimed at deterring violent crime and sends a direct message to criminals entering Mississippi.