On Friday, a federal judge dismissed Donald Trump’s lawsuit against New York Attorney General Letitia James, meaning her civil investigation into his business practices may move forward.

The Daily Mail reports:

In a 43-page ruling, U.S. District Judge Brenda Sannes said she based her decision on case law that, in most cases, bars federal judges from interfering in state-level investigations.

Sannes’ ruling came a day after a New York appeals court ruled that Trump must answer questions under oath in James’ probe, upholding a lower-court ruling requiring him to sit for a deposition.

‘In a big victory, a federal court has dismissed Donald Trump´s baseless lawsuit to stop my office´s investigation into his and the Trump Organization’s financial dealings,’ James said in a tweet. ‘Frivolous lawsuits won´t stop us from completing our lawful, legitimate investigation.’

Trump sued James in December after she issued a subpoena for his testimony.

Through his lawyers, the Republican former president alleged that the probe was political in nature and that James, a Democrat, had violated his constitutional rights in a ‘thinly-veiled effort to publicly malign Trump and his associates.’

Earlier in May, a lawyer for James’ office said the probe is winding down and that evidence from it could support legal action against the former president, his company, or both.