Patrick Crusius, 21, from Allen, Texas, pleaded not guilty in court Thursday to the killing of 22 people in the mass shooting Aug. 3 at an El Paso Walmart.
Twenty-five people were wounded in the attack.
Crusius, who is accused of using an AK-47-style rifle in the attack, allegedly told authorities after his arrest that he intended to kill as many Mexicans as possible and purportedly posted a white-supremacist manifesto online before the attack.
He could face hate crimes prosecution for what federal authorities labeled an act of domestic terrorism.
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In court, Crusius told the judge he did not want to hear the charges read against him. He pleaded "not guilty."
Judge Sam Medrano scheduled another hearing for 2 p.m. Nov. 7.
El Paso County District Attorney Jaime Esparza, who seeks the death penalty for Crusius, declined to comment after the hearing.
Before the arraignment, court officials had families of the victims enter through a separate line. A metal detector was set up outside the courtroom door.
The court doors opened at 1 p.m., and the court quickly filled up.
After the arraignment, the families were ushered out through a side door. Journalists were not allowed to photograph them in the courtroom.
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Officials from the Mexican consulate in El Paso attended the arraignment. Eight Mexican nationals were killed in the attack.
Follow Aaron Montes on Twitter: @aaronmontes91
This article originally appeared on El Paso Times: Patrick Crusius pleads not guilty in El Paso Walmart mass shooting