Before details were made available about the substance of the raids and because the three suppliers provide parts to Toyota, there was some speculation that the raids were connected to the federal government's investigation of Toyota's recall woes, but the FBI insists that is not the case. Toyota released a short statement about the situation, saying only "Toyota is aware that certain suppliers have been contacted by government officials, but we have limited information about the scope of the investigation. Toyota has not been contacted by authorities." Toyota is part owner of Denso International.
[Source: The Detroit News, Toyota]