EDITION OF THU 8 OCT 2026
100 · WORLD

Caretaker killed in Poland’s second school knife attack in two days

publishers 25articles 33first reported 6 Oct, 09:45 UTCdeveloping since 6 Oct · 11 editions

A 15-year-old former pupil killed a school caretaker and injured two other people in a knife attack at a primary school in Leszczydol-Nowiny, northeast of Warsaw, on Thursday, Polish authorities said.

The attack occurred at about 9 a.m. local time. The woman who died was 37, according to the South China Morning Post, while the BBC identified the two injured people as teachers. Authorities said the teenager wore a helmet-mounted camera and may have been responding to an online challenge, though it was unclear whether the attack was recorded.

The incident was Poland’s second school knife attack in two days. On Wednesday, a 19-year-old student attacked people at a school in Ostroleka in northeastern Poland. Reuters reported that 10 people were injured, while AP said the student injured nine people. The South China Morning Post reported that 10 people, including the attacker, were wounded. The 19-year-old was arrested.

Police also detained a 17-year-old in Sierpc, north-central Poland, on suspicion of planning an attack. Prime Minister Donald Tusk convened an emergency meeting and said authorities feared a “grim copycat phenomenon.”

HOW THIS STORY WAS MADE

Written from 8 articles, 1 with the publisher's own text; 7 independent newsrooms once syndicated copies count as one; this version written 54 h after the record first saw the story; the editor revised it.

Publishers
25
Source articles
33
Given to the writer
8, 1 with the article's own text
Independent newsrooms
7
This version written
54 h after the record first saw the story
Second model (editor)
revised
Publication gate
passed
Human review
none

WHAT THE EDITOR DID

The second model checked the writer's draft against the same sources and changed it before publication. Struck words were in the draft; underlined words are its corrections.

WHAT IT FLAGGED editor revise: Remove the unsupported explanation for why reports gave different injury totals. - "which may account for the differing totals": This is the writer's own explanation for differing injury counts; no source says the inclusion of the attacker accounts for the discrepancy.

THE DRAFT AND THE CHANGES

Caretaker killed in Poland’s second school knife attack in two days

A 15-year-old former pupil killed a school caretaker and injured two other people in a knife attack at a primary school in Leszczydol-Nowiny, northeast of Warsaw, on Thursday, Polish authorities said. The attack occurred at about 9 a.m. local time. The woman who died was 37, according to the South China Morning Post, while the BBC identified the two injured people as teachers. Authorities said the teenager wore a helmet-mounted camera and may have been responding to an online challenge, though it was unclear whether the attack was recorded. The incident was Poland’s second school knife attack in two days. On Wednesday, a 19-year-old student attacked people at a school in Ostroleka in northeastern Poland. Reuters reported that 10 people were injured, while AP said the student injured nine people. The South China Morning Post reported that 10 people, including the attacker, were wounded, which may account for the differing totals.wounded. The 19-year-old was arrested. Police also detained a 17-year-old in Sierpc, north-central Poland, on suspicion of planning an attack. Prime Minister Donald Tusk convened an emergency meeting and said authorities feared a “grim copycat phenomenon.”

Written by a language model from the sources above, then checked by a second model that may only cut, attribute or correct. How it works →

NAMED IN THE COVERAGE

OUTLETS CARRYING THE STORY, RUN BY RUN

0 14 29 7 Oct 8 Oct 9 Oct 10 Oct 11 Oct 12 Oct 13 Oct 14 Oct 15 Oct 16 Oct 7 Oct 18:16 UTC · Ten injured in knife attack at school in northeastern Poland 8 Oct 12:21 UTC · One Killed, Several Injured in Two Polish School Attacks 8 Oct 18:22 UTC · Caretaker killed in Poland’s second school knife attack in two days

WHAT HELD, WHAT CAME LATER

From the first reports to the latest

  • Donald Tusk · 2 outlets

Entered the story later

  • Nothing new took hold after the first third.

Figures reported with different numbers

  • injured knife: 7 (1 from 7 Oct 12:15) → 10 (2 from 7 Oct 14:55) → 9 (1 from 8 Oct 04:00) → 8 (1 from 13 Oct 09:30)

Matched by pattern, not read: a different number can be a correction, a rising count, or two different counts.

HOW THIS STORY DEVELOPED: EVERY HEADLINE, EVERY OUTLET →