Olof Palme was shot on Sveavägen–Tunnelgatan on 28 February 1986.
FILE 042 · SWEDISH STATE / SECURITY
ASSASSINATION · FULL DOSSIER
Palme
A murder investigation so large that its own investigative history became a case.
HERO / LOCATION · Tage Olsin / Wikimedia Commons · CC BY-SA 2.0 · source
01 / DOCUMENTED CORE
Start with what the record can carry.
Swedish prime minister Olof Palme was murdered on Sveavägen in Stockholm on 28 February 1986.
The murder is documented; responsibility remains unresolved. In December 2025 the Swedish prosecutor declined to reopen the investigation and changed the 2020 rationale, saying the evidence was insufficient to point to the previously named person as suspect.
02 / CASE RECORD
What is established.
The investigation ran from 1986 to 2020 and became one of the world’s largest murder investigations.
In 2020 the case was closed with a deceased person identified as the suspected perpetrator.
In December 2025 the prosecutor said the evidence was insufficient to point to that person and did not reopen the case.
03 / VISUAL RECORD
Images with a declared evidentiary role.
The murder location photographed in 2005; mark date clearly.
04 / CLAIM LEDGER
One claim at a time.
CLAIM 01Olof Palme was murdered on 28 February 1986.
DOCUMENTEDThe status applies only to this claim. It does not automatically transfer to other allegations in the file.
CLAIM 02Stig Engström can be identified as the killer on the available evidence.
INSUFFICIENT EVIDENCEThe status applies only to this claim. It does not automatically transfer to other allegations in the file.
CLAIM 03A foreign intelligence service directed the murder.
UNRESOLVED / NOT PROVENThe status applies only to this claim. It does not automatically transfer to other allegations in the file.
05 / TIMELINE
The sequence matters.
- 28 FEB 1986Olof Palme is murdered in Stockholm.
- 1986–2020The murder investigation continues through multiple leadership phases.
- 10 JUN 2020Prosecutor closes the investigation.
- 18 DEC 2025Prosecutor declines reopening and changes the rationale, saying evidence is insufficient to point to the named suspect.
06 / OPEN QUESTIONS
Where the evidence stops.
Who killed Olof Palme.
Which of the many foreign, domestic, criminal or security-service theories merit further evidentiary weight.
07 / THREADS
Connections, typed — not implied.
08 / SOURCE STACK
Primary and official records first.
EDITORIAL STATE
FULL DOSSIER
This page is live because the route and core evidence are useful. The label does not mean every allegation has been exhaustively reviewed.
REVIEW STATE
SOURCE CHECKED
UNRESOLVED is the current file-level lens. Claim-level labels above remain controlling for individual allegations.