President Donald Trump slammed Senate Judiciary ranking member Dianne Feinstein for releasing the transcript of a Fusion GPS co-founder’s testimony to the panel, calling her “sneaky” and suggesting — without evidence — she might have broken the law.

The California Democrat said she made the transcript public because she felt the American people had the right to know what the firm’s leaders said about a dossier of Russia-related information about Trump. But she did so over the objections of panel Chairman Charles Grassley of Iowa, angering Republicans and the White House.

“The fact that Sneaky Dianne Feinstein, who has on numerous occasions stated that collusion between Trump/Russia has not been found, would release testimony in such an underhanded and possibly illegal way, totally without authorization, is a disgrace,” Trump tweeted Wednesday morning.

He then said Feinstein, who is seeking another term, “Must have tough Primary!”

Watch: Just How Realistic Is Trump’s 2018 Legislative Agenda?

The tweet came during the president’s reported extended “executive time,” additional time in the mornings and evenings when Trump tweets, makes calls and watches cable news. He is not slated to start his official day until his 11 a.m. intelligence briefing, according to the White House.

“The president’s tweet is absolute rubbish,” said Senate Judiciary member Richard Blumenthal.

Feinstein had the authority to make the transcript public as the committee’s top Democrat, he said.

“The implication that it was illegal is irresponsible and reprehensible,” the Connecticut Democrat told reporters Wednesday morning.