 Joseph Greene , a U.S. immigration agent , testified in court that FBI agents had learned of the assassination plot from a member of the organization who was in a witness protection program . Greene said that members involved in the assassination plot included Ma Anand <unk> , <unk> Yvonne <unk> , and Alma <unk> . The assassination plot was investigated by the FBI and the Oregon State Police . <unk> told law enforcement that Ma Anand <unk> hoped Turner 's death would prevent an Immigration and <unk> Service investigation which she thought could lead to <unk> 's arrest and <unk> from the United States . Weaver stated " These attempts to assassinate public officials were because they were presenting an immigration case that might result in imprisonment " of <unk> . " There were not simply plans , but at least one ( assassination ) attempt , " said Weaver at the hearing . 
