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Ohio carries out first US execution by single injection

8 December 09 18:06 GMT

Ohio has become the first US state to carry out an execution with a single-drug injection instead of the usual combination of three drugs.

Kenneth Biros, 51, was put to death after the US Supreme Court denied his final appeal.

Biros had been convicted of the murder of a 22-year-old woman in 1991.

The new method was introduced because of concerns that prisoners could suffer extreme pain if the first of the usual three drugs failed to work effectively.

Critics say the method - which uses a dose of thiopental sodium and can take twice as long to take effect - is human experimentation. US justice officials deny this.

'Experimental use'

Biros was pronounced dead about 10 minutes after the injection was administered, the Associated Press news agency reports. On average, death took seven minutes under the previous method in Ohio.

The total process of Biros' execution lasted for about 43 minutes, AP said, adding that the execution team took about 30 minutes to find a suitable vein for the insertion of the needle.

The change of approach follows a failed attempt to execute a prisoner in Ohio in September, when officials struggled for two hours to try to find a suitable vein into which to inject the drugs.

All executions were put on hold while another method was sought.

The Ohio Department of Rehabilitation and Correction had estimated that it would take 15 to 30 minutes for prisoners to die using the new method, but also that it would be less painful.

Officials rejected suggestions that the technique was experimental, noting its widespread use as an anaesthetic.

"It's not an experiment drug, it's used in existing protocol and it's used in hospitals all across this nation and in the world," Terry Collins said.

Other states which have the death penalty were reported to be watching closely but some - including Florida, Kentucky, Texas and Virginia - have said they intend to keep the triple-drug method.

Of the 36 death penalty states which have lethal injection as a means of execution, all but Ohio favour the three-drug method.

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