While Toyota CEO Akio Toyoda sits answering questions on Capitol Hill, the FBI confirmed with us they raided the offices of three Toyota suppliers in Metro Detroit for documents related to antitrust violations and hiding of quality problems.The FBI just confirmed to us they raided the offices of Yazaki North America, Denso International and Tokai Rika (TRAM), as part of an ongoing probe into Toyota's 1.4 million unit recall, and a larger antitrust action confirmed by Toyota to MSNBC. This comes at the same time as Toyota Motor Corp. CEO Akio Toyoda takes the stand in Washington, DC and follows a report that the SEC was looking into the embattled automakers.