Washington ? A House lawmaker said Friday that internal Toyota documents show the automaker deliberately withheld key vehicle design and testing evidence in lawsuits filed by Toyota drivers injured in crashes.

In a letter to Toyota’s top North American executive, House oversight committee Chairman Edolphus Towns accused Toyota of shielding its testing data on potential problems with Toyota vehicles. Towns wrote that Toyota chose to enter hefty settlements with plaintiffs to avoid disclosing the database, which the lawmaker said was referred to as the “Books of Knowledge.”

The Toyota documents “show a systematic disregard for the law and routine violation of court discovery orders in litigation,” Towns wrote in the letter to Yoshimi Inaba.

Toyota said in a statement that it is confident it acted appropriately in product liability lawsuits and it looks forward to addressing Towns’ concerns.