Washington (CNN) President Donald Trump questioned on Thursday why the FBI never warned his campaign that Russians might try to infiltrate his team, despite being briefed on the matter in August 2016.

In a tweet, Trump echoed recent comments from conservative radio host Rush Limbaugh, who lambasted the FBI and claimed that the bureau never raised the issue with Trump or his campaign.

"RUSH LIMBAUGH: 'If the FBI was so concerned, and if they weren't targeting Trump, they should have told Trump. If they were really concerned about the Russians infiltrating a campaign (hoax), then why not try to stop it? Why not tell Trump? Because they were pushing this scam,'" Trump wrote on Twitter

Trump has pressed this point throughout the past week. During a Memorial Day weekend full of tweets about the Russia probe, Trump wrote , "why didn't the crooked highest levels of the FBI or 'Justice' contact me to tell me of the phony Russia problem?"

But these claims ignore the fact that Trump was personally warned in August 2016 by senior US intelligence officials that foreign adversaries -- including Russia -- would likely attempt to infiltrate his team or gather intelligence about his campaign, according to sources familiar with the matter.

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