BOISE, Idaho (AP) — Idaho's corrections chief says the agency is switching to a one-drug lethal injection for future executions of death row inmates.

Idaho Department of Corrections Director Brent Reinke said Friday execution teams will administer a single, lethal dose of the surgical sedative pentobarbital.

That's a change from the execution carried out by the agency last fall, when the condemned inmate was injected with three-drug mixture, which included pentobarbital.

Reinke says the change was driven by difficulties in obtaining the other two chemicals used to kill Paul Ezra Rhoades in November.

The decision makes Idaho the latest death penalty state to switch to using only pentobarbital in its lethal injection.

Reinke says the one-drug protocol will be used in the June 12 execution of convicted murderer Richard Leavitt.