President Trump went after his former election opponent Hillary Clinton, slamming her in a tweet on Sunday morning.

"Hillary Clinton colluded with the Democratic Party in order to beat Crazy Bernie Sanders. Is she allowed to so collude? Unfair to Bernie!" Trump wrote.

This is of course not the first time the president has made such a claim against Clinton.

Click through the president's tweets from over the weekend:

6 PHOTOS Trump tweets about Russia meddling in 2016 election See Gallery Trump tweets about Russia meddling in 2016 election Since the Obama Administration was told way before the 2016 Election that the Russians were meddling, why no action? Focus on them, not T! Just out: The Obama Administration knew far in advance of November 8th about election meddling by Russia. Did nothing about it. WHY? Since the Obama Administration was told way before the 2016 Election that the Russians were meddling, why no action? Focus on them, not T! Obama Administration official said they "choked" when it came to acting on Russian meddling of election. They didn't want to hurt Hillary? Just out: The Obama Administration knew far in advance of November 8th about election meddling by Russia. Did nothing about it. WHY? Democrats slam GOP healthcare proposal as Obamacare premiums & deductibles increase by over 100%. Remember keep your doctor, keep your plan? Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Back in October 2016, Trump tweeted, "Crooked Hillary colluded w/FBI and DOJ and media is covering up to protect her. It's a #RiggedSystem! Our country deserves better! "

While Trump didn't specify what prompted the Sunday's tweet, the Washington Times reported Friday that former U.S. Attorney General Loretta Lynch has been asked to answer additional questions about the involvement she may have had in Hillary Clinton's email probe.

A letter was sent to Lynch on Thursday by four bipartisan leaders of the Senate Judiciary Committee.

It cites a New York Times piece from April where she was reportedly referenced by a Democrat as likely to "keep the Clinton investigation from going too far."

The letter also references testimony given by former FBI Director James Comey in May where he expressed doubt about the Justice Department's ability to "credibly complete the investigation."

More from :

Trump seizes on Republican victory in Georgia to push agenda

Trump appears to admit Russia meddled in the US election in a tweet criticizing Obama

President Donald Trump set to hold 'Make America Great Again' rally in Cedar Rapids, Iowa