US President Donald Trump on Monday signaled opposition to the suggestion that an ongoing investigation at the Manhattan District Attorney’s office should be expanded to fraud at the Trump Organization.

Last week, Manhattan District Attorney Cyrus Vance hinted at the expanded investigation through a court filing. Up until then, it was suspected that the inquiry was narrower in scope. Vance is now seeking to subpoena eight years of tax returns.

In rejecting the evidentiary basis, Trump’s attorneys filed a memorandum that states, “Yet the District Attorney’s motion heavily relies on a declaration submitted by a member of his staff and an assortment of newspaper articles. In short, the District Attorney inappropriately asks this Court to ignore the Federal Rules at every turn.”

Trump’s legal team also submitted a separate letter to the judge presiding over the case Monday, requesting a hearing and additional information about the relevance of the subpoenas.

The dispute stems from an alleged 2006 affair between Trump and porn actress Stormy Daniels. Trump admits to a non-disclosure agreement and subsequent payment through his then-attorney Michael Cohen but denies that an affair occurred between him and Daniels.

Daniels maintains that the affair did occur.

Some suggest that Trump’s legal filings could result in a delay in the investigation.