Supreme Court Blocks Alabama's Nitrogen Gas Execution

Fri Jun 12 2026 21:08:14 GMT+0000 (Coordinated Universal Time)

Supreme Court blocks Alabama's nitrogen gas execution of death row inmate Jeffery Lee, citing constitutional limits on cruel and unusual punishment.

The United States Supreme Court denied Alabama’s request to use nitrogen gas to execute Jeffery Lee, a 49‑year‑old inmate convicted of a 1998 robbery murder. Two lower courts had previously blocked the method on the grounds that it likely violates the Constitution’s ban on cruel and unusual punishment. A brief issued by the Supreme Court offered no explanation, while Justices Thomas, Alito and Gorsuch filed a dissent that they would have granted the execution. Alabama’s prosecutor and attorney general argued that the halt amounted to a miscarriage of justice, with the state willing to pursue different execution methods for Lee. Human‑rights experts warn that nitrogen hypoxia causes intense air hunger and emotional distress before suffocation sets in.

The United States Supreme Court denied Alabama's request to use nitrogen gas to execute Jeffery Lee, a 49‑year‑old inmate convicted of a 1998 robbery murder.

Two federal courts had earlier blocked the nitrogen hypoxia method, finding it likely violates the Constitution’s ban on cruel and unusual punishment. Alabama appealed that ruling, but the Court refused to let the execution proceed.

The Court issued a brief on its emergency docket with no explanation. Three justices—Thomas, Alito and Gorsuch—filed a dissent, indicating they would have allowed the use of nitrogen gas.

Alabama’s prosecutor and attorney general labeled the halt a miscarriage of justice, arguing the victims’ families were ready to see justice carried out and that the state was prepared to seek other execution methods.

The state has carried out seven nitrogen gas executions since January 2024, but it can still pursue alternative capital‑punishment methods for Lee under state law.

Human‑rights advocates note that the nitrogen hypoxia process can cause severe air hunger, anxiety and physical discomfort, leading to asphyxiation. Expert testimony in lower courts highlighted the psychological and physiological agony inmates endure before the inevitable breathlessness.