President Donald Trump says the nation must reform mental health laws to better identify "mentally disturbed individuals" after two mass shootings in Texas and Ohio this weekend killed dozens of people.

The Republican president avoided blaming guns for the killings in El Paso, Texas, and Dayton, Ohio. He said at the White House on Monday, "Mental illness and hatred pulls the trigger, not the gun."

The Ohio shooter killed his sister and eight other people before he was shot dead by police. Authorities say the El Paso shooter posted a racist, anti-immigrant manifesto before killing 21 people and being taken into custody.

Trump blames a culture in which violent video games and "dark recesses" of social media contribute to radicalizing perpetrators of mass shootings.