Former White House physician and retired Navy rear admiral Ronny Jackson attacked President Barack Obama in a tweet, accusing him of abusing his office to leak information on President Donald Trump.

Jackson called Obama a “Deep State traitor” and called for legal action for his “weaponization” of “the highest levels of our Government.” He also described former Obama’s conduct during his office as “heinous.”.

Jackson’s tweet is only one of many now trending on Twitter after Trump reposted conservative commentator Buck Sexton‘s tweet, in which he criticized Obama.

According to the commentator, who often appears on Fox News, “The outgoing president used his last weeks in office to target incoming officials and sabotage the new administration.”

Trump retweeted him using the hashtag “Obamagate.” However, when asked by a Washington Post reporter what crime he was accusing Obama of, Trump dodged the question.

“You know what the crime is,” he said, “The crime is very obvious to everybody. All you have to do is read the newspapers, except yours.”

Two years ago, Trump tried to appoint Jackson as Head of Veterans Affairs. However, allegations of misconduct surfaced, and Trump had to withdraw his nomination. Jackson is now running for Texas’s 13th Congressional District, despite residing outside of the district. He is also being endorsed by Trump.

Last Wednesday, acting Director of National Intelligence Richard Grenell provided the names of officials under the Obama administration who “unmasked” the identity of Michael Flynn, who was later charged for lying to FBI officials about Russia.