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Case Description

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Summary based on 26 sources
On a tragic afternoon at the Boise Towne Square mall on October 25, 2021, a 26-year-old White/Caucasian woman named Jo Acker lost her life in a heroic act. Acker, a security guard at the mall, confronted an active shooter to protect the lives of shoppers and employees. The gunman, identified as 27-year-old Jacob Bergquist of Boise, opened fire, fatally wounding Acker on the first floor of the building near a department store.

The tragic event unfolded when Bergquist, dressed in black and armed with multiple firearms, began shooting inside the mall. After shooting Acker, he continued his rampage, firing multiple rounds that resulted in the death of another individual, 49-year-old Roberto Padilla Arguelles, and injuries to four other people, including a police officer. The chaos sent shoppers fleeing for safety as law enforcement descended on the scene.

Responding officers located Bergquist and an exchange of gunfire ensued. During the shootout, a Boise police officer and a woman in her car were injured. The suspect, Bergquist, was also shot and later died at a hospital the following day. An investigation revealed that Bergquist had 18 spent shell casings inside the mall and was known to law enforcement, with previous reports of disruptive conduct and trespassing at the mall. Despite being a convicted felon, which under federal law should have prohibited him from possessing firearms, a determination of his prohibited status was not made by the Bureau of Alcohol, Tobacco, Firearms and Explosives until after the fatal shooting.

Links to Additional Sources (26)

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  • KBOI: Ada County Coroner identifies victims, suspect in Boise mall shooting
  • https://www.idahostatesman.com/article255306131.html
  • https://www.idahostatesman.com/news/local/crime/article255298106.html
  • Idaho Press: 2 dead, at least 5 injured in Boise mall shooting
  • 2 killed, police officer among 5 injured in Idaho mall shooting
  • https://twitter.com/BoisePD/status/1452745585635774469
  • KBOI: Two people killed, several injured, including officer, after shooting at Boise mall
  • https://www.idahostatesman.com/news/local/community/boise/article255275396.html
  • HRC | Honoring Jo Acker, Trans Woman Who Confronted Shooter
  • Jo Acker Is the 42nd Trans American to Die a Violent Death in 2021
  • Trans Security Guard Jo Acker Dies a Hero in Boise Mall Shooting
  • Security guard killed in Boise mall shooting remembered by family
  • 'She had an enormous heart of gold': Boise mall shooting victim had ...
  • Family of Boise mall security guard killed in shooting files tort claim
  • Trans woman killed in mass shooting after trying to stop gunman
  • Boise mall shooter died by suicide, coroner says - KTVB
  • Two years on: Remembering the heroes and victims of the Boise ...
  • is our beautiful sister 26 year old Jo Acker. She was born ... - Instagram
  • 26-Year-Old Trans Woman Jo Acker Killed in Boise, Idaho
  • Boise police report finds no motive for mall shooting - Idaho Press
  • Boise police report finds no motive for 2021 mall shooting | ktvb.com
  • GoFundMe created for daughter of Boise mall security guard
  • Images of 26 year old security guard Jo Acker who was killed in ...
  • Jo Acker a Boise Hero - by RH - Blue Collar Notes
  • Boise police report finds no motive for 2021 mall shooting | krem.com
  • Jo Acker (25 Oct 2021) - Remembering Our Dead