The Boulder, Colorado, mass-shooting suspect is being held without bail

• Ahmad Al Aliwi Alissa, 21, is being held without bail, a judge said on Thursday.
• Alissa is accused of fatally shooting 10 people at the King Soopers in Boulder, Colorado.
• His attorney requested three months before the next hearing to investigate Alissa's mental health.

Ahmad Al Aliwi Alissa, the 21-year-old accused of fatally shooting 10 people at a King Soopers in Boulder, Colorado, is being held without bail, Judge Thomas Mulvahill said at Alissa's first court appearance on Thursday.

Alissa is accused of 11 charges - 10 counts of murder and one count of attempted murder - stemming from the attack on Monday.

During the short court hearing, Mulvahill read Alissa his rights, and Alissa acknowledged that he understood them.

Alissa's attorney, Kathryn Herold, asked Mulvahill for three months until the next hearing.

"After this we cannot do anything until we are able to fully assess Mr. Alissa's mental illness," Herold said. "We cannot assess the needs and depth of Mr. Alissa's mental illness until we have the discovery from the government."

The prosecution told the court that the crime scene had not yet been fully processed and that it planned to file additional charges against Alissa in the next few weeks.

When Alissa was taken into custody on Monday evening, he was shirtless and had blood on his body. He had been injured in a shootout with officers, the police said.

It was not clear whether Alissa had been diagnosed with a mental illness, and authorities have not disclosed a motive. Researchers have long said that mental illness is not an indicator of violence; people with mental illnesses are more likely to be victims of violence than perpetrate it.

Family members of Alissa's who've spoken with news outlets have described his behavior as paranoid and antisocial.

Damien Cruz, who was friends with Alissa and his older brother in high school, told Insider that Alissa had a tendency to lash out when he lost wrestling matches.

"But he wasn't the guy to bully people, and he didn't start any drama," Cruz told Insider. "The bullying and drama just found him, and when it did he reacted over the top."

The victims in the shooting have been identified as Denny Stong, 20; Neven Stanisic, 23; Rikki Olds, 25; Tralona Bartkowiak, 49; Suzanne Fountain, 59; Teri Leiker, 51; Eric Talley, 51, a police officer; Kevin Mahoney, 61; Lynn Murray, 62; and Jody Waters, 65.

The attempted-murder charge is related to Richard Steidell, a police officer who responded to the shooting.