A Mexican man pleaded guilty Tuesday in the killing of a U.S. Border Patrol agent whose death revealed the botched "Fast and Furious" gun-smuggling operation, marking the biggest conviction to date in a case that embarrassed the federal government and prompted a series of congressional investigations.
In his guilty plea, Manuel Osorio-Arellanes admitted that he was part of a rip-off crew that sneaked into the United States from Mexico about a week before the death of Agent Brian Terry. They stashed guns and food supplies on the U.S. side of the border and killed Terry as they searched for marijuana smugglers to rob.