The White House said the violence seen in Boulder, Colorado Sunday is "unacceptable" after a man accused of using a makeshift flamethrower and an incendiary device to attack a group that had gathered to bring attention to Israeli hostages in Gaza. "And rest assured, to all Jewish Americans across our great country, this president has your back. And he's not going to allow anyone to take part in... acts of terrorism in our country," said White House press secretary Karoline Leavitt Monday. The suspect, Mohamed Sabry Soliman, 45, told police he planned it for a year and specifically targeted what he described as the “Zionist group,” the FBI said. Eight people were injured in the attack, some with burns, as a group was concluding their weekly demonstration to raise visibility for the hostages who remain in Gaza. Witnesses reported the man yelled “Free Palestine” during the attack. Soliman has been charged with a federal hate crime, according to court documents filed Monday. Authorities said they believe Soliman acted alone. He was also injured and taken to a hospital. Authorities did not elaborate on the nature of his injuries, but a booking photo showed him with a large bandage over one ear. State and federal authorities planned to hold a news conference Monday afternoon. Soliman was living in the U.S. illegally after entering the country in August 2022 on a B2 visa that expired in February 2023, Department of Homeland Security Assistant Secretary Tricia McLaughlin said in a post on X. McLaughlin said Soliman filed for asylum in September 2022 and was granted a work authorization in March 2023 that had expired. DHS did not immediately respond to requests for additional information. President Donald Trump is also “likely” to talk this week with Chinese President Xi Jinping, Leavitt says. The two leaders are slated to talk as trade tensions have intensified after both nations agreed in May to reduce tariffs for a 90-day negotiation period. But the U.S. is displeased with problems over China exporting critical minerals, while China is frustrated by U.S. efforts to limit their access to advanced computer chips. Leavitt told reporters that the White House would provide a readout of the call between Trump and Xi.