FBI Director Christopher Wray has briefed members of Congress on the two mass shootings in Dayton, Ohio, and El Paso, Texas, that occurred over the weekend.

Sources on the Democratic caucus call confirmed that Wray had spoken with House Democrats about the issue earlier Wednesday, a day after the House GOP received a similar briefing from the FBI chief.

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Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.) and other Senate Republicans were briefed on the shootings Wednesday as well, according to congressional sources, while it was initially unclear whether Senate Minority Leader Charles Schumer Chuck SchumerPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' 3 reasons why Biden is misreading the politics of court packing Cruz blocks amended resolution honoring Ginsburg over language about her dying wish MORE (D-N.Y.) and Senate Democrats had received a briefing.

Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyGOP lawmakers distance themselves from Trump comments on transfer of power The Hill's 12:30 Report: Ginsburg lies in repose Top GOP senators say Hunter Biden's work 'cast a shadow' over Obama Ukraine policy MORE (R-Iowa), who was on Wednesday's call with Wray, tweeted that he had thanked the agency "for the support theyre giving El Paso + Dayton law enforcement" and pledged to continue to monitor developments in the investigations.

I just got off phone w FBI Dir Wray Thx to FBI for the support theyre giving El Paso + Dayton law enforcement FBI Dir Wray briefed senators on their ongoing investigations I will continue to closely monitor developments after this wkend’s horrific acts of violence — ChuckGrassley (@ChuckGrassley) August 7, 2019

Lawmakers, particularly Democrats, have pressured the Justice Department and the Trump administration to respond to growing white nationalist and white supremacist movements in the U.S., calls that gained strength following the weekend's two shootings.

Last month, Wray told lawmakers that the majority of the FBI's domestic terrorism arrests from the past year have involved white supremacy.

The suspect in the El Paso shooting, where 22 died, is thought to have been influenced by white supremacist and anti-immigrant materials and to have posted a manifesto including such sentiments before the attack.

President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE denounced white supremacist ideologies in a national address following the shootings this weekend and on Wednesday visited both Ohio and Texas.