Federal authorities raided more than 20 locations, including childcare facilities, in Minneapolis on Tuesday as part of a sweeping fraud investigation into largely Somali-owned businesses, the Department of Justice confirmed to Fox News."Today the FBI with federal, state and local law enforcement is involved in court-authorized law enforcement activity as part of an ongoing fraud investigation," a Department of Justice spokesperson said.Authorities executed 22 federal search warrants in Minnesota on Tuesday morning as part of the operation, which is not immigration-related.The raids center on federal fraud investigations into largely Somali-owned childcare facilities that registered their daycare with the state but were allegedly billing for care that was not provided.Fox News is told that two of the raids were conducted at the Quality Learning Center and Baby Halimo Child Care, both in Minneapolis.The Quality Learning Center received national attention after blogger Nick Shirley visited several childcare addresses only to find an assortment of vacant or non-operational storefronts, closed businesses or angry Somali occupants who refused to answer questions or entertain the pair’s mock efforts to "register" a child with the supposed daycare.This is a developing story; check back for updates.