He then said -- quote -- "It is finished."
The parents of Davis' victim watched through a window a few feet from him but he never looked at them. He was pronounced dead eight minutes after the lethal drugs began to flow.
Forty-year-old Davis had been out of prison less than four months when authorities said he and several friends were involved in robbing an acquaintance, 26-year-old Michael Barrow, and killing him at Barrow's home.
Davis' execution was the fourth in Texas this year and the second in as many weeks.
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