OMAHA, Neb. (AP) — The families of two cab drivers killed by a Nebraska death row inmate four decades ago say they're long past ready for his execution. But a lawsuit filed this week is threatening another delay.

Carey Dean Moore is scheduled for execution Tuesday, the state's first since 1997. A German pharmaceutical manufacturer sued the state this week to block prison officials from using its drugs in the lethal injection. A federal judge plans to rule Friday.

Moore fatally shot the father of Richelle Van Ness-Doran in 1979. She tells the Omaha World-Herald that waiting 38 years for the execution is enough.

Lori Helgeland-Renken's father also was killed. She says the months leading up to the scheduled execution have again rekindled the pain and fear she felt after her father's death. Moore's execution dates have been repeatedly delayed.

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Information from: Omaha World-Herald, http://www.omaha.com