Timothy McVeigh learning that agents in the investigation of the Midwest Bank Robbers (an alleged Aryan-oriented gang) had turned up explosive caps of the same type that were used to trigger the Oklahoma City bomb. Agents expressed surprise that bombing investigators had not been provided information from the Midwest Bank Robbers investigation. McVeigh declined further delays and maintained until his death that he had acted alone in the bombing. Some witnesses claimed to have seen a second suspect, and there was a search for a "John Doe #2", but none was ever found. Notes Further reading Timothy McVeigh Timothy James McVeigh (April
Oklahoma City bombing conspiracy theories militia movement and that their motive was to retaliate against the government's handling of the Waco and Ruby Ridge incidents (the bombing occurred on the second anniversary of the Waco incident). McVeigh was executed by lethal injection on June 11, 2001 while Nichols was sentenced to life in prison. Although the indictment against McVeigh and Nichols alleged that they conspired with "others unknown to the grand jury", prosecutors, and later McVeigh himself, said the bombing was solely the work of McVeigh and Nichols. In this scenario, the two obtained fertilizer and other explosive materials over a period of months and