Texan justice at work:
Michael Johnson, 29, was found dead at 2.45am lying in a pool of blood after he used a makeshift metal blade to cut his jugular vein and an artery in his right arm, Texas prison spokeswoman Michelle Lyons said.Remember, George W. Bush set new records for Death Row as Governor of Texas. His legacy lives on:
She confirmed that a message written in blood was found on Johnson's cell wall, but would not disclose its contents, pending an investigation into the death.
Texas prison system sources said Johnson wrote, "I didn't do it."
Texas leads the nation in capital punishment with 376 executions since 1982, six years after the US Supreme Court lifted a national death penalty ban.
Johnson would have been the 22nd person executed by the state this year.
There are 390 people on the state's death row.