Two members of the Hutaree militia, which regards President Barack Obama as the Antichrist and seeks to create a "colonial Christian republic," filed the suit against three federal agents and a state trooper who raided several homes and confiscated stockpiles of guns and ammunition.
The suit seeks $400,000 in damages, the Detroit Free Press said Tuesday. It claims violation of their Fourth Amendment rights preventing unreasonable searches and Second Amendment rights for taking several guns and 100,000 rounds of ammunition.
The government charged the men with plotting to overthrow the government and kill police officers but a federal judge tossed out the indictment last year saying the government lacked evidence the group ever truly intended to act.
A spokesman for the FBI in Michigan declined to comment on the lawsuit.
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