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JEFFERSON CITY, Mo. (AP) - Missouri Gov. Jay Nixon has denied clemency for convicted killer Michael Taylor, hours before Taylor was scheduled to be put to death.

Taylor is scheduled to die by injection at 12:01 a.m. Wednesday for killing 15-year-old Ann Harrison in Kansas City in 1989.

His attorneys have questioned Missouri's use of an unnamed compounding pharmacy to provide the pentobarbital for his execution. They also say Taylor's original trial attorney was so overworked that she encouraged him to plead guilty to lessen her own workload.

Some who are close to the case say they're shocked it's taken so long for Missouri to punish Taylor.

Later Tuesday night, the Missouri Supreme Court also denied Taylor a stay of execution.

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