BOULDER — A Boulder County jury on Monday found Ahmad Al Aliwi Alissa guilty of 55 crimes in the March 2021 mass shooting at a King Soopers in which 10 people died. Alissa killed Denny Stong, 20; Neven Stanisic, 23; Rikki Olds, 25; Tralona Bartkowiak, 49; Teri Leiker, 51; Boulder police Officer Eric Talley, 51; Suzanne Fountain, 59; Kevin Mahoney, 61; Lynn Murray, 62; and Jody Waters, 65. Family and friends of the victims cried as the judge read the first guilty verdict. Police officers in the courtroom took deep breaths and sighed as the guilty count was read for their fallen colleague. Alissa fidgeted in his seat, sipped water and talked with his lawyer as Boulder County District Judge Ingrid Bakke read the verdict. His family sat stoically behind him. The charges included 10 counts of first-degree murder, one count of first-degree murder of a peace officer and 38 counts of attempted first-degree murder. Alissa was sentenced to life in prison without the chance of parole on the first-degree murder charges and received 1,862 years in prison on the other charges. Alissa’s lawyers never disputed that he was the shooter but they tried to convince the jury that he was insane and could not tell right from wrong at the time of the shooting. Alissa was diagnosed with schizophrenia after the mass shooting and suffered auditory and visual hallucinations for several years leading up to the attack. His defense team said he was hearing voices that told him to carry out the shooting. The jury started its deliberations in the mid-afternoon Friday but took a break for the weekend. They resumed deliberations at 9 a.m. Monday at the Boulder County Justice Center and had a verdict by 12:30 p.m. Monday. Testimony lasted 10 days as people inside the grocery store described the terror of gunshots zipping through the store. People took cover under checkout counters while others hid in the deli, bakery, coffee stand and offices. TOPSHOT – Onlookers stand outside the King Soopers grocery store in Boulder, Colorado on March 22, 2021 after reports of an active shooter. – Police swarmed a grocery store in the western US state of Colorado on March 22, 2021, following reports of an active shooter and multiple casualties, law enforcement and eyewitnesses said, with at least one man detained. No details of casualties have been confirmed, but Colorado governor Jared Polis and Boulder Mayor Sam Weaver each referred to the incident as a “tragedy” in statements on Twitter. (Photo by Jason Connolly / AFP) (Photo by JASON CONNOLLY/AFP via Getty Images) BOULDER, CO – MARCH 22: Healthcare workers walk out of a King Sooper’s Grocery store after a gunman opened fire on March 22, 2021 in Boulder, Colorado. Dozens of police responded to the afternoon shooting in which at least one witness described three people who appeared to be wounded, according to published reports. (Photo by Chet Strange/Getty Images)) BOULDER, CO – MARCH 22: Tactical police units respond to the scene of a King Soopers grocery store after a shooting on March 22, 2021 in Boulder, Colorado. Dozens of police responded to the afternoon shooting in which at least one witness described three people who appeared to be wounded, according to published reports. (Photo by Chet Strange/Getty Images) BOULDER, CO – MARCH 24: A man places flowers in the fence at a makeshift memorial for the victims of a mass shooting outside a King Soopers grocery store on March 24, 2021 in Boulder, Colorado. Ten people, including a police officer, were killed in the shooting on Monday.(Photo by Michael Ciaglo/Getty Images) BOULDER, CO – MARCH 25: A woman takes a moment to herself at a makeshift memorial set up outside the site of a shooting at a King Soopers grocery store on March 25, 2021 in Boulder, Colorado. The Monday shooting left 10 people dead, including one police officer. (Photo by Chet Strange/Getty Images) Flowers cover a police cruiser outside of the Boulder Police Department in honor of Boulder Police officer Eric Talley, who was one of ten people to killed during a mass shooting at a King Sooper’s grocery store one day earlier in Boulder, Colorado, on March 23, 2021. – Colorado police on March 23, 2021, said a 21-year-old man has been charged with 10 counts of murder, a day after a mass shooting at a grocery store in the city of Boulder. “This suspect has been identified as Ahmad Alissa, 21,” Boulder Police Chief Maris Herold told a news conference. (Photo by Jason Connolly / AFP) (Photo by JASON CONNOLLY/AFP via Getty Images) BOULDER, CO – MARCH 25: Mourners visit a makeshift memorial set up outside the site of a shooting at a King Soopers grocery store on March 25, 2021 in Boulder, Colorado. The Monday shooting left 10 people dead, including one police officer. (Photo by Chet Strange/Getty Images) Show Caption1 of 7TOPSHOT – Onlookers stand outside the King Soopers grocery store in Boulder, Colorado on March 22, 2021 after reports of an active shooter. – Police swarmed a grocery store in the western US state of Colorado on March 22, 2021, following reports of an active shooter and multiple casualties, law enforcement and eyewitnesses said, with at least one man detained. No details of casualties have been confirmed, but Colorado governor Jared Polis and Boulder Mayor Sam Weaver each referred to the incident as a “tragedy” in statements on Twitter. (Photo by Jason Connolly / AFP) (Photo by JASON CONNOLLY/AFP via Getty Images) Expand One 79-year-old woman testified that she fell and broke vertebrae. She prayed until a man lifted her and carried her to safety. A mom and son, who were buying strawberries and tea, waited until they heard Alissa reload before running out of the grocery. Alissa’s parents testified that his behavior was strange before the attack and they thought he could be possessed by an evil spirit. He suffered from paranoia and delusion, experts testified. But the jury did not buy arguments that Alissa was incapable of knowing right from wrong when he purchased an automatic gun and ammunition, scouted locations to carry out a massacre and then reloaded inside the grocery store.