Texas Executes Marvin Wilson

Defense had claimed man had IQ of 61.

HUNTSVILLE, Texas -- A Texas man convicted of killing a police informant was executed Tuesday evening after the U.S. Supreme Court rejected arguments that he was too mentally impaired to qualify for the death penalty.

Marvin Wilson, 54, was pronounced dead at 6:27 p.m., 14 minutes after his lethal injection began at the state prison in Huntsville. Wilson's attorneys had argued that he should have been ineligible for capital punishment because of his low IQ.