The suspect in Sunday attacks on Boulder tried in November to buy a gun, but was rejected, according to the Colorado Investigation Bureau.
Mohamed Sabry Soliman, 45, the suspect, tried to buy weapons on November 22, 2024, but was rejected based on the national instant criminal background checking system, according to the bureau.
The reason for his rejection was not disclosed. He did not appeal to the rejection, said the bureau.
About a month later, on December 30, 2024, CBI denied his request for hidden gun permission.
Soliman has been charged with federal racial crime and state accusations, including 16 accusations of trial attempted first -level murder, according to court documents. He appeared in court virtually on Monday. He has not submitted an application.
His wife and children are in immigration detention and the enforcement of the US Customs and the family are being processed for accelerated transfer, according to the Department of Domestic Security.
“We are investigating the extent to which his family knows about this heinous attack, if they have knowledge about it, or if they provide support for it,” said Secretary of Domestic Security Kristi Noem Tuesday. “I continue to pray for the victims of this attack and their families. Justice will be served.”
Soliman – who was arrested after suspected of throwing Molotov cocktails in “acts of terrorism” during the demonstration that advocated hostages held in Gaza on Sunday on Sunday – was in the US with expired tourism visas, officials said.

An Israeli flag stands on a flower bed when the ribbons are blocking the deserted pearl road at the attack on the demonstrators who called for the release of Israeli hostages held in Gaza, in Boulder, Colorado, June 1, 2025.
Eli Imadali/AFP through Getty Images
The father of five children was given a work permit, but it also ended in March.
Soliman was born in Egypt and lived in Kuwait for 17 years before moving to Colorado Springs three years ago, a court document said.
Soliman allegedly said he had planned an attack on Sunday for one year but waited until his daughter graduated from a high school last Thursday to carry it out, said state documents and federal.
Sixteen Molotov cocktails that are not used are in the “arm reach” of the suspect when he was arrested, said the special agent of FBI Denver responsible for Mark Michalek on Monday.
The unlucky Molotov cocktail “consists of bottles of wine wine or ball jars filled with clear liquid and red cloth hanging from bottles,” said a court document. The police also found “backpack spraying, potentially containing flammable substances. Clear liquid in glass bottles and weed sprayers determined to 87 octane gasoline, which is determined to contain xylene.”
ABC News’ Kevin Shalvey, Emily Shapiro and Luke Barr contributed to this report.