President Trump said the FBI is too focused on trying to prove collusion between his campaign and the Russians and suggested that this may have contributed to the agency's bungled handling of a tip about the shooter who killed 17 people and injured scores more at a Florida high school last week.

"Very sad that the FBI missed all of the many signals sent out by the Florida school shooter. This is not acceptable," Trump tweeted late Saturday night. "They are spending too much time trying to prove Russian collusion with the Trump campaign - there is no collusion. Get back to the basics and make us all proud!"

Very sad that the FBI missed all of the many signals sent out by the Florida school shooter. This is not acceptable. They are spending too much time trying to prove Russian collusion with the Trump campaign - there is no collusion. Get back to the basics and make us all proud! — Donald J. Trump (@realDonaldTrump) February 18, 2018



The confessed shooter Nikolas Cruz, 19, used an AR-15-style rifle to attack his former high school in Parkland, Fla., on Wednesday. On Friday, the FBI admitted that that it received a tip about Cruz last month that he had been behaving erratically and threatening to kill people, but “protocols were not followed.” Attorney General Jeff Sessions ordered an “immediate review” of the Department of Justice and FBI after officials failed to follow up on that tip. Sessions called the review a “top priority.”

Trump also expressed his dismay with a comment his national security adviser, H.R. McMaster, made during the Munich Security Conference in Germany earlier in the day.

Following the unveiling of Mueller's indictments of 13 Russian nationals and three Russian entities on Friday, McMaster said "the evidence" of Russian interference in the 2016 U.S. election "is now incontrovertible."

"General McMaster forgot to say that the results of the 2016 election were not impacted or changed by the Russians and that the only Collusion was between Russia and Crooked H, the DNC and the Dems," Trump tweeted. "Remember the Dirty Dossier, Uranium, Speeches, Emails and the Podesta Company!"

General McMaster forgot to say that the results of the 2016 election were not impacted or changed by the Russians and that the only Collusion was between Russia and Crooked H, the DNC and the Dems. Remember the Dirty Dossier, Uranium, Speeches, Emails and the Podesta Company! — Donald J. Trump (@realDonaldTrump) February 18, 2018



As Trump notes, the indictment Friday makes no allegations of collusion, saying, "some defendants, posing as U.S. persons and without revealing their Russian association, communicated with unwitting individuals associated with the Trump Campaign and with other political activists to seek to coordinate political activities." Deputy Attorney General Rod Rosenstein, who is overseeing Mueller's efforts, also said "there is no allegation in the indictment that the charged conduct altered the outcome of the 2016 election."

Trump's allegation that his Democratic rival in the election, Hillary Clinton, is guilty of corruption stems from reports and investigations into multiple controversies, including the "Trump dossier," which contains salacious and unverified claims about his ties to Russia. The opposition research firm that commissioned the dossier was funded in part by Clinton and the Democratic National Committee.

One of the other controversies Trump referenced involves the "Uranium One" deal, which relates to Clinton's alleged involvement while serving as secretary of state in a quid pro quo scheme that allowed Russia to buy a stake in U.S. uranium production in exchange for donations to the Clinton Foundation.

The Podesta Group, a longtime K Street fixture run for decades by Tony Podesta, brother of Clinton campaign chairman John Podesta, collapsed at the end of last year as the firm's involvement in a lobbying campaign on behalf of pro-Russia forces in the Ukrainian government came under scrutiny from both the press and Mueller.

Trump's hammering of the FBI comes as a time when the reputation of the federal law enforcement agency had already been facing stern question from Republicans and Trump supporters over concerns of political bias.

Trump is spending the weekend at his Mar-a-Lago resort in Palm Springs, Fla.