Piazza Fontana bombing
terrorist attack carried out in Milan in 1969
The Piazza Fontana bombing (Italian: Strage di Piazza Fontana) was a terrorist attack that occurred on 12 December 1969 when a bomb exploded at the headquarters of Banca Nazionale dell'Agricoltura (the National Agricultural Bank) in Piazza Fontana (near the Duomo) in Milan, Italy, killing 17 people and wounding 88. The same afternoon, another bomb exploded in a bank in Rome, and another was found unexploded in the Tomb of the Unknown Soldier. The attack was carried out by the neo-fascist paramilitary terrorist group Ordine Nuovo, and possibly undetermined collaborators.
Piazza Fontana
On 25 April 1969, a bomb exploded at the Fiat booth at a Milan trade fair, in which five people were injured. There was also a bomb discovered at the city's central station. The explosion at Piazza Fontana was not the first, but part of a well-coordinated series of attacks.
Deceased victims
Deaths of Pinelli and Calabresi
The Piazza Fontana bombing was initially attributed to Italian anarchists. After over 80 arrests were made, the suspect Giuseppe Pinelli, an anarchist railway worker, died after falling from the fourth-floor window of the police station where he was being held. Serious discrepancies existed in the police account, which initially maintained that Pinelli had committed suicide by leaping from the window during a routine interrogation session. Three police officers interrogating Pinelli, including Commissioner Luigi Calabresi, were put under investigation in 1971 for his death, but a later inquiry, which ended on 25 October 1975, concluded that there were no wrongdoings regarding Pinelli's death: public prosecutor Gerardo D'Ambrosio established that his fall had been caused by fainting and losing balance, tired after three days of intense questioning.
The public source identifies “Piazza Fontana bombing” as terrorist attack carried out in Milan in 1969. This brief keeps that definition visible, then builds a research path around Piazza, Fontana and bombing.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Piazza Fontana bombing”, the useful work is to connect “terrorist attack carried out in Milan in 1969” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 10, 2026. The linked authority identifier is Q891865. The Library of Congress control number is sh2002002032. Authority coordinates are 45.463, 9.194. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1969, 1971 and 1975.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Piazza Fontana bombing”, its source revision and the description used here.
- Expand the search: follow Piazza Fontana bombing primary sources, Piazza Fontana bombing archive and Piazza research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Piazza Fontana bombing”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Piazza Fontana bombing” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.