Federal prosecutors say a defense contractor has agreed to pay $4.2 million to settle allegations it had submitted false claims related to employee wages for work at a U.S. Air Force base in Oklahoma.

The U.S. Attorney’s Office in Oklahoma City says that PAE Applied Technologies had been accused of submitting false claims to the Air Force for employee wages under an aircraft maintenance and airfield management contract at Van Air Force Base in Enid.

Federal prosecutors say the contractor submitted false claims for wage rates above the applicable wage caps from 2009 to 2014.