(FOX NEWS) The Mexican citizen executed Wednesday night for killing his 16-year-old cousin wrote in a handwritten statement that he will be back for justice, “You can count on that!”

Ruben Ramirez Cardenas, 47, was given a lethal injection after several federal court appeals failed to halt his punishment for the February 1997 killing of Mayra Laguna, 16. She was abducted from her family’s apartment and beaten to death.

Asked by the warden to make a final statement, he replied, “No, sir.”

As the lethal dose of pentobarbital began, he took a couple of breaths and then began snoring. After less than a minute, all movement stopped.

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