The Latest on the Texas execution of Pablo Lucio Vasquez (all times local):

2 p.m.

The U.S. Supreme Court has refused to stop the scheduled execution of a South Texas man for the 1998 slaying of a 12-year-old boy whose blood the convicted killer said he drank.

The high court Wednesday rejected an appeal from 38-year-old Pablo Lucio Vasquez about four hours before he was set to receive lethal injection.

Vasquez's lawyer wanted the reprieve so the justices could review whether several potential jurors improperly were excused from Vasquez's capital murder trial because they either were opposed to the death penalty or not comfortable making such a judgment.

Vasquez told police he was drunk and high when voices convinced him to kill David Cardenas. He also told detectives that he drank the boy's blood.

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1:15 a.m.

The U.S. Supreme Court has been asked to block the scheduled execution a South Texas man for the slaying of a 12-year-old boy whose blood the convicted killer said he drank.

Pablo Vasquez told police he was drunk and high 18 years ago when voices told him to kill David Cardenas.

Vasquez said in a videotaped statement that after beating the seventh-grader with a pipe and cutting his throat, he lifted the boy's body, allowing the blood to drip on his face, and drank it.

The 38-year-old Vasquez's execution set for Wednesday evening would be the 11th this year nationally, the sixth in Texas.

Vasquez's lawyer contends a reprieve is needed so the high court can review whether several potential jurors improperly were excused from Vasquez's capital murder trial.