The Auburn Hills (Michigan) offices of TK Holdings  - Takata's North American operations subsidiary - were raided this week by FBI agents and Department of Justice officers as part of an antitrust investigation.

Local media reported that the agents seized cell phones, copied computer hard drives and interviewed staff.

"TK Holdings Inc. was unexpectedly served with a search warrant yesterday morning for specific tasks, and we cooperated fully with them," Alby Berman, vice president of TK Holdings for marketing and PR, said in a statement. "We anticipate the inquiry may be related to an ongoing investigation involving Tokai Rika. That's all we know at the present time."

"The subpoena targeted safety system suppliers - seat belts, air bags, steering wheels and safety electronics - any communications with competitors," Berman, told the Detroit Free Press.  "That's all they would tell us. When they came in we said, 'Whatever you want. We'll cooperate with you.' "

The subpoena targeted communications dating to Jan. 1, 2005, Berman told the DFP.

The report added that last year FBI agents spent about six hours searching the US headquarters of Tokai Rika. The investigation is also reported as including Yazaki North America and Denso's North American operations.

TK Holdings is the North American subsidiary of Japan-based Takata Corp and supplies seat-belts, air bags, steering wheels and safety electronics. The company competes directly with Tokai Rika for seat-belt business. In North America, its largest customers are Honda, followed by GM, Chrysler and Ford. TK Holdings also supplies to Nissan and Toyota in North America.