Toyota Motor Corp. released misleading information about an investigation into problems with stuck gas pedals that led to a massive Toyota recall, the U.S. government said Wednesday, stressing the issue is still under review by federal safety regulators.

The National Highway Traffic Safety Administration said it was still investigating the case and meeting with Toyota to hear about the company's plan to redesign the vehicles and fix "this very dangerous problem."

Toyota recalled 3.8 million vehicles in the U.S. last month over problems with gas pedals that got stuck on floor mats and told owners to remove driver's side floor mats and not replace them until the automaker had determined a fix to the problem.

Toyota said in a statement on Monday that NHTSA had confirmed "that no defect exists in vehicles in which the driver's floor mat is compatible with the vehicle and properly secured."

But NHTSA said that was inaccurate and the government was investigating possible causes of the acceleration problem. Removing the floor mats was "simply an interim measure" and "does not correct the underlying defect in the vehicles involving the potential for entrapment of the accelerator by floor mats, which is related to accelerator and floor pan design."

"The matter is not closed until Toyota has effectively addressed the defect by providing a suitable vehicle based solution," NHTSA said in the statement, which the department said was issued to correct "inaccurate and misleading information" from the automaker.

Toyota spokesman John Hanson said "it was never our intention to mislead or provide inaccurate information. Toyota agrees with NHTSA's position that the removal of the floor mats is an interim measure and that further action is required. We continue to discuss an appropriate vehicle remedy or remedies."