Cummins is saying it had nothing to do with the Chrysler diesel vehicles that are accused of cheating on emissions testing.

The EPA is accusing Fiat Chrysler of installing software in vehicles that allow them to cheat on emissions tests, according to a report from TTWN Media Networks. The EPA says the software was allegedly installed in more than 100,000 Jeep Grand Cherokees and Dodge Ram trucks. The agency says the software would violate the Clean Air Act and put out more air pollution. In a statement, Fiat said its emission controls are state of the art, and it’ll work with the incoming administration to try to resolve the matter fairly.

Cummins released a statement Thursday saying that it did not supply the engines in question and pointed out that the Columbus-based engine manufacturer was not named in the EPA’s notice of violation.

According to the company statement, Cummins does not use defeat devices and is committed to meeting emissions standards.