Prior to Thursday's meme, The Briefing's last tweet had been on November 7, one day before Trump's surprise election win.
In an earlier tweet, he called it a massive "witch hunt".
After a seven hour rest from Twitter, Trump then fired up again at his election rival.
The New York Times had alsoreported the investigation was now looking into if Trump associates laundered from Russian Federation during presidential campaigns.
"Crooked H destroyed phones w/ hammer, "bleached" emails, & had husband meet w/AG days before she was cleared- & they talk about obstruction?" He's tweeting about being under investigation despite a building full of people, including lawyers, who don't want him to do that because, well, duh.
Mueller is also reportedly investigating whether Trump associates committed financial crimes.
Once Comey was sacked, the Department of Justice appointed Mueller as special counsel to act as an independent investigator.
Except that Trump's tweet, technically speaking, refers to his own "non-dealings" rather than possible actions of his campaign and administration.
Attorney General Jeff Sessions, Trump's son-in-law Jared Kushner and campaign advisor Paul Manafort have also been implicated. The FBI later concluded that Clinton was not aware of the deletions.
Comey had testified that Lynch, as President Obama's attorney general, directed him on how to describe the Federal Bureau of Investigation probe into Clinton's email practices.
It was closed days later after concluding all the emails were duplicates of ones previously scrutinised.
For the record Mr. Comey, destruction of evidence is actually a federal crime and it was actually admitted to in actual FBI testimony, but only after you, Mr. Comey, chose to pass out immunity deals to Hillary's staff "like candy".
Despite winning the popular vote by several million, Clinton lost the election thanks to narrow defeats in the swing states of Michigan, Pennsylvania and Wisconsin.
Qatar Airways profits $540 million, braces for Gulf crisis
The decision will come as a relief to the more than 11,000 people from Saudi Arabia, the UAE and Bahrain living in Qatar. Morocco, a close ally of the Gulf countries, said on Sunday it would remain neutral and offered to facilitate dialogue.
Trump travel ban dealt another blow as appeals court rules
The justices are considering the administration's request to reinstate its ban on travelers from six mostly Muslim countries. The Supreme Court's new briefing schedule for the combined cases lets the government submit its final brief on June 21.
Murray finds his magic in win over Del Potro
Murray broke right away to begin the second and although the 2016 runner-up gave it back at 5-4, he eventually took the set 7-5. Del Potro's will was broken after that as he lost all six games in the third set to hand Murray a 7-6 (8), 7-5, 6-0 victory.
Justices strike down citizenship law over gender differences
Unwed American mothers, meanwhile, are only subject to a 1-year US residency requirement to give their children USA citizenship. After oral argument , the justices were deadlocked 4-4, which left the lower court's ruling in the government's favor in place.