Arizona changes lethal injection drugs

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A shortage of the drug Arizona uses for its executions has forced the state to go to a two-drug combination already used in another state.

Arizona Attorney General Tom Horne on Wednesday said the Department of Corrections will use a combination of the sedative medazolam and hydromorphone, a powerful painkiller, to execute condemned prisoners.

The drugs replace pentobarbital in executions at the state prison in Florence.

Horne said the pentobarbital shortage was caused when its only manufacturer refused to sell to states for executions and compounding pharmacies were threatened if they sold the drug.

Arizona used pentobarbital in its previous 11 executions in the state since 2011.

Horne said state law blocks the release of the identity of the new drugs' supplier.

Horne said the two-drug combination is already used in Ohio.

Copyright 2014 CBS 5 (KPHO Broadcasting Corporation). All rights reserved. The Associated Press contributed to this report.