Texas to execute man convicted of killing 2 at birthday party

Austin: Texas plans to execute on Wednesday a man convicted of opening fire at a children's birthday party in 2008, believing a rival gang member was present and fatally shooting a woman and her five-year-old granddaughter in a spray of bullets.
Texas plans to put Erick Davila, 31, to death by lethal injection at 6 p.m. (2300 GMT) at its execution chamber in Huntsville.
If the execution goes ahead, it will be the ninth this year in the United States and the 550th in Texas since the US Supreme Court reinstated the death penalty in 1976, the most of any state.
Prosecutors said Davila was a member of the Bloods street gang and drove by the party in Fort Worth, believing that members of the rival Crips gang were there.
Using a semiautomatic rifle with a laser scope, he fired numerous shots into the group while they were eating cake and ice cream at the Hannah Montana-themed party for a girl, killing Annette Stevenson, 48, and her granddaughter, Queshawn Stevenson, court documents showed.
He also wounded three other children and one woman, according to the documents.
It took jurors about four hours to convict Davila at his trial in 2009.
Texas said he confessed to the killings and told investigators he intended to "have a shoot 'em up" and kill the father of Queshawn Stevenson, a rival gang member who was not injured in the attack.
Lawyers for Davila have filed an appeal with the U.S. Supreme Court seeking to halt the execution.
They said prosecutors violated a decision by the court through the hiding of evidence favorable to the defense of him being high on a variety of drugs at the time of the offense.
They also said it was inappropriate for his former trial judge, now the prosecuting attorney, to seek his execution date. Texas has said prosecutors acted properly.
In their Supreme Court filing they said evidence of him being intoxicated at the time is evidence that is not favorable or material to the outcome of the trial.