Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Activities

International operations

23 coordinated operations in 2024 and 847 works restituted: OIMAP's practical action with its partners against trafficking in cultural property.

Updated : October 28, 2026· 4 min read

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Acting together against trafficking

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

International operations are the most concrete part of OIMAP's work. In 2024, the Organisation coordinated 23 joint operations among customs, police, museums and experts from several countries. In total, 847 works have been restituted to their countries or to their rightful owners since monitoring began.

OIMAP does not conduct investigations: it coordinates, connects, provides expertise and the BIOP registry, and monitors restitutions.

This section presents the reviews, the ongoing operations and the partners.

  • Operations
  • Restitutions
  • Cooperation

International operations in figures

23Operations coordinated in 2024
847Works restituted (cumulative)
4Cooperation partners
1Public review each year

Source: Events and Communications Directorate.

Three pages

Breakdown

Border controls35% (indicative)
Market and online sales30% (indicative)
Archaeological sites20% (indicative)
Restitutions15% (indicative)

Indicative nature of the operations.

Fishing Boats along the Beach, Eugène Isabey (c. 1830)
Fishing Boats along the Beach, Eugène Isabey (c. 1830)
Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848)
Châteauvieux-sur-Suran, Antoine-Claude Ponthus-Cinier (1848)
Return of the Fishing Boats at Collioure, near the Spanish Border, Adolphe Appian (1878)
Return of the Fishing Boats at Collioure, near the Spanish Border, Adolphe Appian (1878)

What is an operation?

An international operation is a coordinated, time-limited action that brings together several administrations from different countries around a common objective: controlling a flow, checking a market, finding reported objects. OIMAP provides the framework, the introductions, the data and the expertise.

Each operation rests on a written mandate, a timetable and rules for sharing information. States remain in charge of their own investigations and prosecutions.

The role of OIMAP

The Organisation plays three roles. It alerts, thanks to the BIOP registry and to reports of theft or loss received within 24 hours. It coordinates, by bringing the actors together and ensuring the consistency of their actions. It monitors, by ensuring the restitution of works and the documentation of results.

It also makes accredited experts available to identify seized objects, together with legal support based on the 1954, 1970 and 1995 conventions.

Types of operations

Some operations are targeted checks, at the border or on an online marketplace. Others are verification campaigns in auction rooms and fairs. Still others accompany restitutions, from establishing the identity of the work to its physical return.

Training activities are linked to these operations: the officials who take part follow the Academy's modules, which strengthens the results.

Restitutions

A restituted work is one whose ownership is recognised as belonging to a State or a person and which returns to its rightful place. The process comprises identification, verification of rights, agreement of the parties, secure transport and a conservation report.

The cumulative total of 847 restituted works covers very varied objects: manuscripts, archaeological objects, paintings, ritual instruments. Each restitution is documented in the annual reviews.

Roles of the actors

Four categories of actors
ActorRoleExample
StateInvestigates and prosecutesNational mandate
OIMAPCoordinates and monitorsBIOP registry, experts
PartnersSupportCustoms control, police, museum expertise
MarketCollaboratesReporting of anomalies

Milestones

  1. Creation

    Cooperation mandate.

  2. First joint operations

    Maritime borders (indicative).

  3. Directives

    Common investigation framework.

  4. 23 operations

    Official figure.

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Ships near the Trieux River, Paul Signac (1925)
Ships near the Trieux River, Paul Signac (1925)
View of the Gulf of Pozzuoli from Solfatara, Philipp Hackert (1803)
View of the Gulf of Pozzuoli from Solfatara, Philipp Hackert (1803)

Confidentiality

One-off or permanent operation

Whitby Harbor, Frank Meadow Sutcliffe (c. 1885)

One-off

A few weeks
  • Precise objective
  • Concentrated resources
  • Rapid review

For an identified flow.

Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

Permanent

Lasting arrangement
  • Continuous monitoring
  • Stable network
  • Higher cost

For a sensitive region.

Cycle of an operation

  1. Alert

    Receipt of a report.

  2. Frame

    Mandate and partners.

  3. Act

    Checks and verifications.

  4. Restitute

    Return of the works.

  5. Report

    Annual review.

Reporting an incident

A coordinator

S. Giorgio Maggiore, Michele Marieschi (1741)
« A successful operation is, first of all, a directory of people who know one another before they need one another. »
Marc Delacroix, operation coordinator (example)

Operations vocabulary

Joint operation
Action carried out together by several States.
Restitution
Return of property to its rightful owner.
BIOP
OIMAP registry of works.
Mandate
Written framework of an operation.

Transparency and confidentiality

Ongoing operations are subject to the confidentiality of the investigation. OIMAP does not publish any detail liable to compromise proceedings, endanger officials or make it easier to circumvent controls.

Conversely, consolidated results are published each year. They allow the public, States and market professionals to assess the effectiveness of international action.

Frequently asked questions

Does OIMAP investigate?

No, it coordinates and supports.

How many operations in 2024?

23.

How many works restituted?

847 in total.

Where can I read the results?

See Reviews.

Useful documents

Contacts

Roman Ruins, Villa Pamfili, Hubert Robert (1774)
Roman Ruins, Villa Pamfili, Hubert Robert (1774)
Events and Communications DirectorateParis — Headquarters+33 1 00 00 07 00evenements@oimap.exampleMonday to Friday, 9:00 a.m. – 5:00 p.m.

Read the reviews

Net Fishing at Night on the Sumida River, Kitagawa Utamaro (c. 1800)

Annual results of the operations.

Reviews
Image credits (23)
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