The country’s top auditor said CK Hutchison owes the government $300 million, posing a hurdle to a plan touted by Trump to bring the ports under U.S. control.

A deal to transfer control over major Panama ports from China-tied CK Hutchison to American firm BlackRock hit roadblocks after Panama’s top auditor accused the Hong Kong business of wrongdoings and owing hundreds of millions of dollars in unpaid fees.

But the deal hailed by Donald Trump as a way to regain American control of the Panama Canal seems to get more complicated by the week. BlackRock, an American investment firm, was scheduled to sign an agreement on April 2nd to buy 43 ports,