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A US federal judge has postponed a fourth Ohio execution as the state looks at how it puts inmates to death in the wake of a botched attempt on one man.
Judge Gregory Frost ordered the execution of 51-year-old Kenneth Biros not take place on December 8 as planned, according to an order seen Tuesday.
He is the fourth inmate in Ohio to have his execution stayed while the state reviews the attempted execution of Romell Broom in September.
Prison staff tried for two hours to execute Broom, a convicted murderer, but were unable to find a vein to administer the lethal injection despite 18 attempts to insert a needle.
Broom's lawyers have argued that any renewed attempt to execute their client would constitute cruel and unusual punishment.
He was the first inmate to survive an execution attempt in the United States since 1946.
Ohio has executed four inmates in 2009.
