A subcontractor that worked on Donald Trump’s new luxury Washington, D.C. hotel has filed a lien claiming that the Trump Organization and its construction manager have not paid it almost $2.1 million.

That claim, reported Friday by the Washington Post, brings the total in alleged unpaid bills on the Trump International Hotel in D.C. to more than $5 million.

Tim Miller, the executive vice president of AES Electrical, which filed the lien three days before Christmas, told the Post dozens of employees were working 12-hour days for weeks in order to meet a hard opening date for the hotel’s opening in September 2016.

Miller said his claim was not meant to be political.

“We’re not in this for any sort of political reasons,” Miller told the Post. “We have no ax to grind, political or otherwise. We’re a business. We have 700 employees that we pay every week. We have bills. We are effectively financing this work, and we don’t think it’s right. That’s really it.”

A regional plumbing firm, Joseph J. Magnolia Inc., and a construction company, A&D Construction, have also claimed Trump has not paid them $2.98 million and $79,700 respectively for work on the hotel.