( CNN ) -- Political and anti-war activists in the Midwest said they were the target Friday of searches the FBI called part of an investigation into the `` material support of terrorism . '' Warrants led to the search of five residences and one office in Minneapolis , Minnesota , said FBI spokesman Steve Warfield , who said there were no arrests . Two other searches were conducted in Chicago , Illinois . Activist Tom Burke in Chicago said he and others in Minnesota , Illinois and Michigan were served subpoenas to testify before a grand jury . He also said computer hard drives were taken from locations in both cities , as well as a cell phone in Minneapolis . Warfield would not comment on that statement or provide details of the searches . He also would not discuss the investigation , other than indicating it is the work of a joint task force on terrorism . The Minneapolis searches were concluded by mid-afternoon Friday , Warfield said . Burke said many agents were still at a Chicago location Friday afternoon . A coalition of groups represented on the Fight Back website released a statement condemning the raids as `` harassment . '' `` We see them as a way to impair our freedom of speech , '' said Burke , a member of the Colombia Action Network . `` We 've done nothing wrong . '' The coalition came together after a large anti-war protest at the Republication National Convention in Minneapolis-St. Paul in 2008 , Burke said . `` We agree the U.S. should treat neighbors in peaceful ways , '' said Burke , pointing to conflict in the Middle East and Colombia . `` We think they [ the FBI ] are on a fishing expedition . '' Among the groups the activists are involved with are the Palestine Solidarity Group , the Freedom Road Socialist Organization , the Twin Cities Anti-War Committee , and Students for a Democratic Society , which was active during the Vietnam War . One of the apartments searched in Minneapolis belongs to Mick Kelly , an anti-war and government protestor , CNN affiliate KARE reported . Kelly said the search warrant indicated agents were looking for evidence of his travels to Latin America and Palestine . Jessica Sundin of the Twin Cities Anti-War Committee told CNN agents took a hard drive , paper files , photos , a cell phone and her passport during a search of her Minneapolis residence Friday . Denying any wrongdoing , Sundin said she was given a subpoena to appear next month before a grand jury in Chicago . She said she will not cooperate with federal investigators , but will talk to lawyers before deciding whether to appear . Sending American weapons and troops abroad is not the solution to international problems , Sundin said . `` We 've been unapologetic in our opposition to U.S. intervention , '' she said . The task force carrying out the raids comprised a number of local and federal agencies , KARE said . CNN 's Katherine Wojtecki contributed to this article .
FBI searches followed , including in Minneapolis and Chicago . The searches are part of a joint task force probe of activists , the FBI says . An activist says hard drives were taken during the searches .