Demetrius Frazier was executed Thursday in Alabama for the 1991 rape and murder of Pauline Brown, marking the fourth U.S.

Alabama has carried out the nation’s fourth nitrogen gas execution, putting a man to death for the killing of a woman who was raped and shot during an apartment break-in.

An man convicted of murdering a woman after breaking into her apartment as she slept was put to death Thursday evening in Alabama in the nation’s fourth execution using nitrogen gas.