Four members of an anti-government group have been arrested on charges that include money laundering, tax evasion and weapons possession, federal prosecutors said Friday. Authorities said the four men are members of the Sovereign Movement, a group that attempts to overthrow the government and defy authority with "paper terrorism." The arrests in Las Vegas on Thursday capped a three-year investigation into the group's activities led by the Nevada Joint Terrorism Task Force, US Attorney for Nevada Greg Brower said. A grand jury indictment in federal court in Las Vegas names Samuel Davis, 54, of Council, Idaho; Shawn Rice, 46, of Seligman, Arizona; Harold Call, 67, of Las Vegas; and Jan Lindsey, of Henderson, Nevada. Davis and Rice are accused of laundering roughly $1.3 million for undercover FBI agents, who described the money as loot from a bank fraud scheme. Davis and Rice are charged with one count of conspiracy to commit money laundering and 30 counts of money laundering. If convicted, they face up to 20 years in prison and a $500,000 fine on each count.