Demetrius Terrance Frazier was the fourth person executed in the United States using nitrogen hypoxia, which involves replacing breathable air with pure nitrogen gas

Frazier was convicted of capital murder for breaking into a Birmingham woman's apartment, stealing cash, raping her at gunpoint, and killing her.

A man convicted of murdering a woman after breaking into her apartment is set to be executed Thursday in Alabama in what would be the nation’s fourth execution with nitrogen gas. Demetrius Terrence Frazier,