Monaco indicts Prince Albert II childhood friend Thierry Lacoste on corruption charges
Monegasque prosecutors charged Parisian lawyer Thierry Lacoste with active corruption and money laundering following his detention in an investigation into the halted Esplanade des Pêcheurs development.
Legal action against former royal counsel
The Monaco prosecutor's office announced on Saturday, 5 September 2026, that Parisian lawyer Thierry Lacoste has been formally indicted on multiple corruption counts. Lacoste, a childhood friend and former legal adviser to Prince Albert II, was placed under formal judicial supervision following extensive questioning. Monaco judicial police took Lacoste into custody on Wednesday, 2 September 2026, after receiving a criminal complaint from real estate developer Patrice Pastor. Investigating magistrates extended the initial custody period twice before holding a formal presentment hearing on Saturday morning. The case represents a further phase in the judicial proceedings surrounding the administration of the principality.
The Monaco prosecutor's office detailed the formal charges in an official public statement on Saturday.
At the end of his hearings and after two extensions of his police custody, he was presented to the investigating judge this morning, who indicted him on charges of criminal conspiracy, active corruption of a national public official in an organized group, passive influence peddling in an organized group, and money laundering.
The Esplanade des Pêcheurs development dispute
The criminal investigation centers on an aborted real estate development known as the Esplanade des Pêcheurs, located at the Monaco marina. The construction project was halted after authorities determined its layout was incompatible with holding the annual Formula 1 Grand Prix. Following the halt, Monaco's Supreme Tribunal ruled against the state and ordered public authorities to pay substantial compensation to the Monegasque construction company Caroli. Court documents record varying figures for the judgment, with one accounting citing 136 million euros excluding interest accrued since 2018, and another recording the compensation at 139 million euros. An appeal against the Supreme Tribunal's judgment was subsequently filed.
Judicial investigators are examining past communications between Lacoste and Antonio Caroli, the entrepreneur who led the Caroli group until his death in October 2025. Authorities are investigating scenarios in which the high-level judicial decision granting the compensation may have been improperly influenced. Prince Albert II has joined the ongoing legal proceedings as a civil party in his personal capacity, alongside the State of Monaco itself.
Scrutiny of the palace advisory circle
The allegations against Lacoste connect directly to the publication of the Dossiers du Rocher documents in 2021. Those leaked files described the alleged existence of a business committee operating within the sovereign state's governing apparatus. In 2023, Prince Albert II dismissed Lacoste from all roles coordinating Monegasque affairs and removed him from personal confidence. The prince also dismissed Claude Palmero, the former administrator of Crown property, and Didier Linotte, the former president of the Supreme Tribunal.
- Publication of the Dossiers du Rocher leaks alleges undue influence by palace advisers.
- Prince Albert II dismisses Thierry Lacoste, Claude Palmero, and Didier Linotte from advisory posts.
- Real estate entrepreneur Antonio Caroli dies amid ongoing litigation over the marina project.
- Monaco police place Thierry Lacoste into custody following a complaint by Patrice Pastor.
- An investigating judge indicts Thierry Lacoste on corruption and money laundering charges.
Patrice Pastor, whose family developed large portions of Monaco real estate during the post-war era, initiated the current legal case. Pastor submitted a formal complaint alleging abuse of office, fraud, money laundering, and corruption against several former officials. That complaint previously resulted in the detention of former Supreme Tribunal judge Didier Linotte before leading to Lacoste's custody and indictment.
Defense response and procedural status
Attorneys representing Thierry Lacoste confirmed that their client traveled to Monaco specifically to answer questions from judicial authorities and police investigators. The defense team maintains that Lacoste is innocent of all criminal allegations and has been targeted unfairly. His lawyers stated publicly that their client has ended up at the center of a network of lies and slander stemming from local business rivalry. Following the formal indictment on 5 September, the investigating judge placed Lacoste under judicial supervision while the criminal inquiry continues.
