In June 1942, Canaris sent eight "Abwehr" agents to the East Coast of the United States as part of Operation Pastorius. The mission was to sabotage American economic targets and demoralise the civilian population inside the United States. However, two weeks later, all were arrested by the FBI thanks to two "Abwehr" agents who betrayed the mission. Because the "Abwehr" agents were arrested in civilian clothes, they were subject to court martial by a military tribunal in Washington, D.C. All were found guilty and sentenced to death. Two others who cooperated with the FBI received sentences of life imprisonment instead. The others were executed by the electric chair in the District of Columbia jail. Due to the embarrassing failure of Operation Pastorius, no further sabotage attempt was ever made in the United States.