- Demetrius Frazier was executed by nitrogen gas in Alabama for the 1991 murder of Pauline Brown.
- Frazier, previously convicted of murder and rape in Michigan, had appeals against his execution method denied.
- Alabama is the only US state using nitrogen asphyxiation, a method criticised by UN experts.
A serial rapist and murderer was put to death by nitrogen gas in Alabama on Thursday, the fourth use of the controversial execution method in the southern US state.
Demetrius Frazier, 52, was sentenced to death in 1996 for the 1991 murder of 40-year-old Pauline Brown, a mother of two, in the Alabama city of Birmingham.
Frazier was found guilty of breaking into Brown’s apartment, raping her and shooting her in the head. The jury voted 10-2 to recommend the death penalty.
According to court documents, Frazier, who is Black, accused the predominantly white jury during his trial of being racist.