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Grandpa slaughtered 9 of his loved ones in horror mass murder-suicide, including friends who were running to save kids from barrage of bullets

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Richter, E. (2026, October 11). Grandpa slaughtered 9 of his loved ones in horror mass murder-suicide, including friends who were running to save kids from barrage of bullets. Daily Mail. https://www.dailymail.com/news/article-16200477/erie-pennsylvania-mass-shooting-family-murder-suicide-grandfather.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

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Daily Mail · collected 2026-10-11 · by Emma Richter
Content note This article describes suicide or self-harm and violence described in detail.

Quick Summary

A 45-year-old grandfather in Erie, Pennsylvania, killed nine family members, including his pregnant daughter Angelina Stone and her two young children, before committing suicide on Friday evening. The victims also included friends Lora Roberts and Twila Tanner, who were reportedly trying to protect the children from the shooter's attack. Police responded to the scene following a ShotSpotter alert but found all casualties upon arrival; no suspects were pursued as the attacker had already died by suicide.
Written by AI on 2026-10-11, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

On October 9, Matthew Stone Sr., a 45-year-old man in Erie, Pennsylvania, killed eight people before taking his own life. The victims included his wife and five children, along with two other women who had come to assist them. Police described the scene as one of the worst they have ever encountered, noting that the house was extremely filthy and filled with bottles of urine.

The shooting occurred after 9 pm when residents called 911 due to hearing gunfire; upon arrival, officers found two women dead outside the home. Stone barricaded himself inside and engaged in a standoff with police before dying from a self-inflicted gunshot wound. Inside the house, investigators discovered additional victims, including children.

Police revealed that Stone had exercised strict control over his family for years, managing their finances and restricting their movements. The home's conditions were described as deplorable, further highlighting the isolation and distress experienced by the victims.

Written for “Pennsylvania Shooting Leaves Nine Dead” on 2026-10-31, grounded in this article and the 30 other(s) covering the same event.

Story

📰 Pennsylvania Shooting Leaves Nine Dead
Crime & Law · 31 article(s) covering the same event. Compare every outlet's account →

Compared with similar articles

This article reads unscored and hedges 33% of its claims. Each row says how that neighbour differs.
New York Post
Hedges 2 of 16 claims Outlet record 66/100
CBS News
Hedges 3 of 16 claims Outlet record 66/100
Times of India
Hedges 4 of 16 claims Outlet record 59/100
Fox News
Hedges 4 of 18 claims Outlet record 69/100
The Straits Times
⚖️ Leans left Hedges 0 of 11 claims Outlet record 66/100
The Hindu
⚖️ Leans left Hedges 0 of 10 claims Outlet record 77/100
The Sydney Morning Herald
Hedges 0 of 1 claims Outlet record 61/100
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
27
sentences that state something as happening or true
Uncertain
33%
9 of 27 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
68/100
Daily Mail's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
31
Crime & Law
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-11 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

Daily Mail · 8535 article(s) · 20 correction(s) detected
Running correction rate · 20 correction(s)

Who wrote this

Emma Richter
55 article(s) here · 1 carrying a prediction
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🔮 Johnson has remembered Riek as 'simply a good man' and 'a highly experienced pilot.' The visibly emotional chairman, who held a moment of silence for the victims, said he had known Riek for years and that he would be truly missed.
🔮 'I will miss you forever and love you forever,' one of them posted.
Also by Emma Richter
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 55 articles by Emma Richter →

Topics

Erie Erie News Now Pennsylvania ShotSpotter the Erie Police Department

Subjects

Amari'anna PERSON · 4× Roberts PERSON · 4× Erie GPE · 3× Kyrie PERSON · 3× Pennsylvania GPE · 3× Twila Tanner PERSON · 3× Angelina Stone PERSON · 2× Erie News Now ORG · 2× Isaiah PERSON · 2× Lora Roberts PERSON · 2×

Narrative

Her unborn child, Kyrie, and her two other young kids, five-year-old Isaiah and Amari'anna, who was about to turn two, also died in the gunfire, her heartbroken family said. Kyrie was supposed to be born on Wednesday.
framing: mixed · carried by 1 article(s) · first seen 2026-10-11
🔮 She was the most beautiful baby God could have created.' Lora Roberts (left) and her friend Twila Tanner (right) died in the shooting while trying to protect the children, according to GoFundMe pages His sister, Lisa Simmers, is also in disbelief over the tragedy.

Claims (27 extracted, 9 hedged)

A Pennsylvania grandfather killed nine of his loved ones in a horror mass shooting before taking his own life, according to relatives. uncertain
grandfather → kill → relatives
The shooter, a 45-year-old unnamed man, opened fire on Friday around 5pm at a family home in Erie before dying of a self-inflicted gunshot wound, Erie News Now reported. asserted
News → open → wound
Angelina Stone, a 24-year-old pregnant mother and the daughter of the shooter, was found shot to death in the home, according to a GoFundMe page. uncertain
Stone → find → page
Her unborn child, Kyrie, and her two other young kids, five-year-old Isaiah and Amari'anna, who was about to turn two, also died in the gunfire, her heartbroken family said. Kyrie was supposed to be born on Wednesday. asserted
Kyrie → turn → Wednesday
Officers with the Erie Police Department rushed to the scene after a ShotSpotter alerted them to two gunshots on the street where the deadly rampage happened, the agency said. asserted
agency → rush → street
When they arrived, they located the bodies of two women, ages 37 and 51, outside. asserted
they → arrive → women
A 19-year-old male, a 21-year-old male, and a 44-year-old female were also found dead in the home. asserted
male → find → home
Police have not identified any victims, but according to two GoFundMe pages, Lora Roberts and her friend Twila Tanner died in the shooting while trying to protect the children. uncertain
Roberts → identify → children
An unidentified 45-year-old grandfather killed nine of his family members in a horrifying mass shooting on Friday evening in Erie, Pennsylvania. asserted
grandfather → kill → Erie
He then turned the gun on himself, police said Angelina Stone, a 24-year-old pregnant mother and the daughter of the shooter, was found shot to death in the home, according to a GoFundMe page Her unborn child, Kyrie, and her two other young kids, five-year-old Isaiah and Amari'anna (pictured with her father), who was about to turn two, also died in the gunfire, her heartbroken family said ' uncertain
family → turn → gunfire
On October 9th in Erie, Pennsylvania, Twila Tanner tragically lost her life while bravely trying to help a friend protect her family from a violent and dangerous individual. asserted
friend → lose → individual
In a moment of courage and selflessness, Twila put herself in harm’s way to help others,' a fundraiser for Tanner read. asserted
fundraiser → put → Tanner
Another donation page was created by Kellie Eggleston in memory of Roberts. asserted
page → create → Roberts
Eggleston's fiancé, Adam Posland, shared the donation page on Facebook, stating that Roberts 'gave her life trying to save another.' Tanner was 51 and Roberts was 37, according to public records. uncertain
Roberts → share → records
Roberts has been remembered as a loving mother of five children who was engaged to her fiancé of 14 years, Jeremy, according to her fundraiser. uncertain
who → remember → fundraiser
Juicesiyah Alexander Ezekiel, Amari'anna's father, told the local outlet that the gunman was Stone's father. asserted
gunman → tell → outlet
'It was my baby, bro, and he just took her,' Ezekiel told Erie News Now, referring to his late daughter. ' asserted
Ezekiel → take → daughter
She was the most beautiful baby God could have created.' Lora Roberts (left) and her friend Twila Tanner (right) died in the shooting while trying to protect the children, according to GoFundMe pages His sister, Lisa Simmers, is also in disbelief over the tragedy. uncertain
sister → create → tragedy
'They are all just beautiful children and definitely did not deserve what happened to them. asserted
what → deserve → them
'We just want to make it right so that the respects are paid to them and they get the send-off they deserve. asserted
they → want → off
At the end of the day, what happened will be remembered for years. asserted
happened → happen → years
This is not something that the city will ever forget,' Simmers added. asserted
Simmers → forget → that
Video surveillance captured gunfire breaking out inside the home before two 'distressed' women started banging on the front door, according to authorities. uncertain
women → capture → authorities
The shooter then came outside and shot them dead before retreating into the home and turning the gun on himself, police said. asserted
police → come → himself
The circumstances surrounding the massacre continue to be investigated, but according to police, they believe this was a 'mental health' situation The circumstances surrounding the massacre remain under investigation, but according to police, they believe this was a mental health situation. uncertain
this → surround → police
Police said identifications of the victims and shooter are being held as of Sunday because 'surviving family members are still being notified.' asserted
members → say → Sunday
The Daily Mail contacted the Erie Police Department and the Erie County Coroner's Office for comment. asserted
Mail → contact → comment
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