The FBI raided the Minneapolis homes of five antiwar activists, including three leaders of the Twin Cities peace movement, Friday morning as part of what it called a probe of "activities concerning the material support of terrorism."
The Minneapolis office of an antiwar organization was also raided, protest leaders said. No one was arrested in any of the raids.
FBI spokesman Steve Warfield said the searches were conducted at about 7 a.m. Lawyers said the agents seized computers, cell phones and documents in the protesters' homes.
The federal search warrants in Minneapolis were related to an ongoing Joint Terrorism Task Force, Warfield said. He offered no details.
Protest leaders said the raids surprised them. Mick Kelly, whose home was searched, played a central role in the 2008 demonstrations at the Republican National Convention in St. Paul. Asked if he was involved in illegal activities, he replied, "Absolutely not."
Ted Dooley, Kelly's attorney, called the raids "a probe into the political beliefs of American citizens and any organization anywhere that opposes the American imperial design." He said the warrants cited a federal law making it a violation to provide or conspire to provide material support to designated foreign terrorist organizations.
The warrant for the raid on Kelly's apartment, in the 1800 block of Riverside Avenue, sought notebooks, address books, photos and maps of Kelly's travels to the Palestinian territories, Colombia and in the United States on behalf of the Freedom Road Socialist Organization. It also sought materials on his personal finances and those of the group, on Kelly's "potential co-conspirators" and recruitment efforts for the group.
The warrant also sought any information about efforts to support FARC, a guerrilla organization in Colombia, the Popular Front for the Liberation of Palestine, and Hezbollah, the political and paramilitary organization based in Lebanon.