India, May 21 -- ATexas man was executed on Tuesday evening, May 20, for brutally killing anelderly clerk by setting her on fire more than a decade ago. Matthew Lee Johnson, 49, received a lethal injection after 6 pm at the state penitentiary in Huntsville for the 2012 murder of 76-year-old Nancy Harris during a convenience storerobbery. Johnson was accused of splashing the great-grandmother with lighter fluid and setting her ablaze at a store in Garland.

Johnson's lawyers had previously argued in appeals that thedeath sentence was unconstitutional as he was improperly determined to be a future danger to society. Recent appeals argued that his execution date had been illegally scheduled.

According to prosecutors, Harris was working her ...