Here’s what we know about the historic execution: In Alabama, 43 other inmates have requested new execution method ... Michael Sennett said at a news conference Thursday night.

The Alabama Execution Case: ... Michael Sennett, told NBC News in December that he was frustrated that the state had taken so long to carry out an execution that the judge ordered decades ago.

Alabama is poised to use nitrogen gas in a planned execution next month — making it the first of any state to attempt such a method and setting the stage for legal challenges.

Mr. Sennett said that he and other family members planned to attend the execution. Another son, Michael Sennett, told NBC News last month that he was frustrated that the state had taken so long to ...

Alabama sets execution using nitrogen gas Alabama has set a January execution ... Smith was one of two men convicted in the 1988 murder-for-hire slaying of Elizabeth Sennett in northwestern Alabama.

Alabama, Oklahoma and Mississippi have OK'd nitrogen hypoxia as an execution method but no state has tried to use it. More litigation over the issue is seen as likely.