Arkansas prison officials asked the state's highest court Friday to stay a judge's order that they must disclose more information about one of the drugs they plan to use in the executions of eight men over a 10-day period in April.

The attorney general's office asked the state Supreme Court to issue a stay of Pulaski County Circuit Judge Wendell Griffen's order requiring Arkansas to release copies of the package insert and labels for its supply of potassium chloride, one of the three drugs used in its lethal injection protocol.

The state said it had released the documents, but had redacted information on the labels that it says could lead to identification of the drug's supplier. Steven Shults, the attorney who sued the state for the information, declined to comment on the case Friday.

Shults' attorneys asked the court to deny the state's motion, saying there was no evidence that the information withheld would identify the drug's supplier.

The filing said releasing all of the information would give Shults "an unreviewable victory that will completely undermine and obviate the confidentiality provisions" of the state's lethal injection law.

Arkansas hasn't executed an inmate since 2005 because of legal challenges and difficulty obtaining drugs. The state's 2015 lethal injection law keeps secret the source of the state's execution drugs.

The prison officials, who plan to execute eight inmates in a 10-day period next month before another one of the state's lethal drugs expires April 30, had refused to release packing slips that detail how the drugs are to be used. The Associated Press has previously used the labels to identify drugmakers whose products would be used in executions against their will. The AP renewed its request after the state acquired its potassium chloride in March, but was also rejected.