President Donald Trump blamed former President Joe Biden's "ridiculous Open Border Policy" for an incident in which an illegal migrant threw firebombs at Israeli hostage supporters in Boulder, Colorado, on Sunday (June 1).

Mohamed Sabry Soliman, 45, an Egyptian national, was charged with a federal hate crime, according to court documents obtained by ABC News on Monday (June 2). Soliman entered the U.S. through Los Angeles International Airport on August 27, 2022, on a non-immigrant visa and was permitted to stay through February 26, 2023. Soliman filed a claim clearing him for work authorization by U.S. Citizenship and Immigration Services on March 29, 2023, which expired in March 2025, meaning he was in the U.S. illegally for more than two months prior to the incident on Sunday.

"Yesterday’s horrific attack in Boulder, Colorado, WILL NOT BE TOLERATED in the United States of America," Trump wrote on his Truth Social account. "He came in through Biden’s ridiculous Open Border Policy, which has hurt our Country so badly. He must go out under 'TRUMP' Policy. Acts of Terrorism will be prosecuted to the fullest extent of the Law. This is yet another example of why we must keep our Borders SECURE, and deport Illegal, Anti-American Radicals from our Homeland. My heart goes out to the victims of this terrible tragedy, and the Great People of Boulder, Colorado!"

White House deputy chief of staff Stephen Miller blamed former President Joe Biden's administration for Soliman being in the U.S. illegally.