Washington DC [United States] March 15 (NT): The officials of the US State Oklahoma have declared to use nitrogen gas as a preferred method for capital punishment, making it the first US state to do so.

The state attorney general, Mike Hunter, and corrections department director, Joe Allbaugh, jointly announced the plan, as reported the Guardian.

Oklahoma and other states haven't been able to get the drugs necessitated for lethal injections amid opposition from drug makers to having their products used in executions.

Hunter and Allbaugh announced that the state will move forward with death-executions by the method of "inert gas inhalation."

Hunter said, "We can no longer sit on the sidelines and wait for the drugs. Using nitrogen will be effective, simple to administer, easy to obtain and requires no complex medical procedures, “as quoted by ANI.

Authorities will work together over the coming months to extend new protocols, the two men further said.

According to the reports, Oklahoma has had one of the active and busiest death chambers in the US, but hasn't carried out an execution since 2015 after a series of mishaps.

However, it is unclear as to when the executions will resume. (NT)