Amanda Marissa McCauley, a 42-year-old Sioux City woman and mother, died on Saturday, September 26, 2026, in a shooting at a home on Douglas Street that left three people dead.
Sioux City Police later identified the victims as Amanda McCauley, her 76-year-old mother, Yolanda Guerra Koon, and Amanda’s husband, Andrew McCauley, 42.
According to investigators, Andrew shot Amanda and Yolanda before dying from a self-inflicted gunshot wound as officers arrived at the home.
The deaths have left two children without their parents and grandmother and have shaken members of the Sioux City community.
Who Was Amanda McCauley?
Amanda Marissa McCauley was born on November 5, 1983, and lived in Sioux City, Iowa.
She was 42 years old when she died on September 26, 2026.
Although her published funeral notice contains limited biographical information, local reporting confirms that Amanda was a mother whose death has had a profound effect on her surviving children and extended family.
In the days following the shooting, community organizations began rallying around the children and relatives facing the aftermath of the tragedy.
Amanda McCauley Quick Facts
| Detail | Information |
|---|---|
| Full Name | Amanda Marissa McCauley |
| Date of Birth | November 5, 1983 |
| Date of Death | September 26, 2026 |
| Age | 42 |
| Residence | Sioux City, Iowa |
| Mother | Yolanda Guerra Koon |
| Husband | Andrew McCauley |
| Incident Location | 3110 Douglas Street, Sioux City |
| Visitation | October 4, 2026 |
| Funeral Mass | October 5, 2026 |
| Burial | St. Michael’s Cemetery |
What Happened on Douglas Street?
Sioux City Police were called to a residence at 3110 Douglas Street at approximately 8:15 a.m. on Saturday, September 26.
The home is located on Sioux City’s north side, not far from Grandview Park.
When officers arrived, they found three people suffering from fatal gunshot wounds.
The individuals were later identified as Amanda McCauley, Yolanda Guerra Koon and Andrew McCauley.
What Did Sioux City Police Say About the Shooting?
Police released additional details on September 29 following their preliminary investigation.
Authorities said Andrew McCauley shot and killed his wife, Amanda, and Amanda’s mother, Yolanda.
Police said Andrew then died from a self-inflicted gunshot wound as officers were arriving at the scene.
The call reporting the shooting reportedly came from inside the residence.
The investigation remains ongoing, meaning police may release further details if additional evidence becomes available.
Three Members of One Family Lost
The Douglas Street shooting resulted in the deaths of three members of the same family.
Amanda was 42.
Her mother, Yolanda Guerra Koon, was 76.
Andrew McCauley was also 42.
For relatives left behind, the incident created several losses at once rather than a single death.
That impact has been especially significant for Amanda and Andrew’s two young children.
Two Children Left Without Their Parents and Grandmother
Local community organization the Crittenton Center said the family tragedy left behind two children, ages 8 and 13.
The children lost both of their parents as well as their grandmother in the incident.
According to the organization, a relative is now caring for them.
The Crittenton Center began collecting financial assistance to help with funeral expenses and the children’s ongoing needs.
The organization emphasized that community support would be important as the children adjust to circumstances that changed suddenly and permanently.
Community Support After the Shooting
The response from the Sioux City community quickly moved beyond questions about what happened.
Local organizations and residents began focusing on how to support surviving relatives.
The Crittenton Center announced that it would accept donations directly rather than establishing a GoFundMe account.
The effort was designed to help with funeral costs and provide additional support for the children.
The response reflects the wider consequences that violent incidents can have on families long after police leave the scene.
Amanda McCauley Funeral Arrangements
Amanda’s official funeral notice confirms that services will be held in South Sioux City.
Visitation is scheduled for:
Sunday, October 4, 2026
2:00 p.m. to 8:00 p.m.
Mohr & Becker-Hunt Funeral Home
1431 W 29th Street
South Sioux City, Nebraska
A Rosary is scheduled for 5:00 p.m. during the visitation.
Amanda McCauley Funeral Mass
Amanda’s Funeral Mass will take place on:
Monday, October 5, 2026
10:30 a.m.
St. Michael’s Catholic Church
1405 1st Avenue
South Sioux City, Nebraska
Following the Mass, burial will take place at St. Michael’s Cemetery in South Sioux City.
Remembering Amanda McCauley
The circumstances surrounding Amanda McCauley’s death are deeply tragic, but the story of her loss extends beyond the police investigation.
She was a daughter and a mother whose death has left surviving children and relatives facing a future they could not have anticipated.
As the Sioux City community continues to process the Douglas Street shooting, attention has increasingly turned toward supporting Amanda’s children and preserving the memory of those whose lives were lost.
For family members and friends, Amanda will be remembered through personal experiences, conversations and moments that cannot be captured fully by an incident report.
Her funeral will offer those closest to her an opportunity to gather, grieve and say goodbye.
DISCLAIMER
This article is based on publicly available information from Sioux City Police, established news reports and Amanda McCauley’s official funeral notice. The police investigation remains ongoing, and some details may change if authorities release new findings. This article is intended for informational and memorial purposes and does not speculate beyond facts publicly confirmed by law enforcement, the funeral home or other reliable sources.