HOUSTON, Texas -

The U.S. Supreme Court has refused an appeal from a Texas death row inmate whose attorneys were demanding state officials disclose the source of drugs intended to execute him.

Robert James Campbell had a pair of appeals in federal courts last month as his scheduled execution neared. While the Supreme Court appeal on drug secrecy was pending, a lower federal appeals court stopped the 41-year-old inmate's punishment to allow his lawyers to pursue appeals that he's mentally impaired and ineligible for the death penalty.

The justices rejected the drug secrecy argument Monday without comment. The court has made similar rulings in other cases.

Campbell was condemned for the 1991 abduction-slaying of a Houston bank teller, Alexandra Rendon.

The case is among several from the court Monday involving Texas prisoners.