Convicted killer Cal Coburn Brown was executed early Friday by lethal injection for the rape, torture and murder of a Seattle-area woman, after delivering a statement forgiving the victim’s family for hating him but complaining he was treated unfairly by the legal system.Brown, 52, died at 12:56 a.m. PDT, after a four-member team injected a lethal one-drug cocktail in the execution chamber of the Washington State Penitentiary.The father, brother and two sisters of his victim, Holly Washa, 21, witnessed the execution, as did King County prosecutor Dan Satterberg.Brown protested sentencing disparities, saying that criminals who had killed many more people, such as Green River killer Gary Ridgway, were serving life sentences while he received a death sentence.“I only killed one victim,” he said. “I cannot really see that there is true justice. Hopefully, sometime in the future that gets straightened out.”Brown did not apologize to the family of the victim, but said he understood their emnity for him. He said he forgave that hatred, held no emnity toward them and hoped the execution would give them closure. He also said the prison staff had been most professional and that he had no complaints about his treatment there in 17 years.