WASHINGTON (AP) — Three death row inmates in Georgia are seeking a court order that would prevent the state from using a drug to execute them without a doctor's prescription.

The inmates, two of whom are to be executed next week, asked a federal judge in Washington on Friday to direct the Drug Enforcement Administration to prevent the use of pentobarbital in lethal injections.

The inmates, Warren Lee Hill, Andrew Allen Cook and Marcus Wellons, argue that the Georgia Department of Corrections' use of the drug without a doctor's prescription violates the federal Controlled Substances Act.

Hill and Cook are scheduled to be executed next week. Wellons' execution date has not been set.

Hill and Cook were each sentenced to death for killings. Wellons was sentenced for raping and killing a teenager.