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 on Sunday ordered U.S. flags to half-staff as "mark of solemn respect" for the victims of weekend mass shootings in El Paso, Texas, and Dayton, Ohio.

"Our Nation mourns with those whose loved ones were murdered in the tragic shootings in El Paso, Texas, and Dayton, Ohio, and we share in the pain and suffering of all those who were injured in these two senseless attacks," Trump said in a proclamation released by the White House.

ADVERTISEMENT

"We condemn these hateful and cowardly acts," he added. "Through our grief, America stands united with the people of El Paso and Dayton."

"May God be with the victims of these two horrific crimes and bring aid and comfort to their families and friends."

Flags will be flown at half-staff at federal facilities until sunset on Thursday.

White House flag flying at half-staff in honor of El Pason & Dayton victims pic.twitter.com/FP7FJyKY44 — Jordan Fabian (@Jordanfabian) August 4, 2019

At least 20 people were killed on Saturday at a Walmart in El Paso. Hours later, nine people died when a gunman opened fire at a bar in Dayton.

--This report was updated at 4:10 p.m.