Idaho lawmakers have approved a bill that could allow prisoner executions by firing squad, the latest move by a state to revisit older methods of capital punishment.

On Monday, Idaho’s state legislature passed the legislation with a veto-proof majority to reinstate a firing squad as the state’s backup method of execution for death row inmates. A longtime death row inmate has had his scheduled execution next week postponed multiple times because due to the scarcity of drugs used for lethal injections.

The bill is now headed to Idaho Gov. Brad Little for signature. He has previously supported the death penalty. 

Other supporters say that death sentences currently are ineffective in the state because it has been unable to get the drugs needed to carry out lethal injections, the only legal method of capital punishment in Idaho. 

“This is not talking about the merits of whether we should have the death penalty or not,” said state Sen. Doug Ricks, a co-sponsor of the bill during a Senate debate Monday. “This is about justice. I do think this a humane way to do it.”

Idaho could be the fifth U.S. state to adopt executions by firing squad if the bill is passed into law.

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Why is Idaho seeking to use a firing squad for executions?

Idaho previously had a firing squad for executions, which it adopted as an option in 1982, but never used it. That option was removed from state law in 2009 after the U.S. Supreme Court upheld a method favoring the more commonly used lethal injections.