(CNN) -- Six years, one month and 23 days after a truck bomb shattered the Alfred P. Murrah Federal Building in Oklahoma City, federal prison authorities placed a needle in Timothy McVeigh's right leg and pumped a deadly stream of drugs into his veins.
McVeigh, 33, did not make a verbal statement before he was executed June 11 in a federal prison in Terre Haute, Indiana. But in a handwritten statement, he quoted a section of the poem "Invictus," which reads in part "I am the master of my fate: I am the captain of my soul."
The convicted bomber was executed for the April 19, 1995, attack that killed 168 people -- 19 of them children -- and injured more than 500. It was the largest terrorist act ever committed on U.S. soil.
Early reports suggested that a Middle Eastern terrorist may have been responsible for the carnage. But within days, federal authorities linked the attack to an all-American-looking young man who appeared more like the boy next door than the epitome of evil.
