Marseille and the surrounding Hérault region were the focus of a large-scale police operation Monday morning, resulting in the arrest of ten individuals. The detentions are linked to the investigation into the murder of Mehdi Kessaci, the 20-year-old brother of anti-drug trafficking activist Amine Kessaci, a crime authorities initially described as a warning or intimidation tactic. This latest development comes more than four months after the shooting, which sent shockwaves through France and intensified scrutiny of organized crime in Marseille.
The arrests, carried out by officers from the judicial police, represent a significant escalation in the investigation. Although details remain limited, authorities indicate the individuals taken into custody are suspected of involvement in the commando unit believed to have carried out the assassination. The investigation has been particularly sensitive, initially overseen by the Marseille public prosecutor’s office before being transferred to the newly established national public prosecutor’s office for combating organized crime (PNACO). This shift underscores the gravity of the case and the national importance placed on bringing those responsible to justice.
Mehdi Kessaci was fatally shot in Marseille’s 4th arrondissement while waiting in his car outside a pharmacy on November 22, 2025. The brazen attack, carried out by assailants on motorcycles, immediately sparked outrage and fueled concerns about the escalating violence linked to the city’s drug trade. Amine Kessaci, who has been a vocal critic of the narcotics networks operating in Marseille, has consistently maintained that his brother was targeted as a direct consequence of his activism. He has spoken publicly about living under constant threat, a sentiment echoed by many residents concerned about the reach of criminal organizations.
A Complex Investigation and Shifting Jurisdiction
The transfer of the investigation to the PNACO, established in January 2026, signals a broader effort to centralize and streamline the prosecution of complex organized crime cases. Le Figaro reported on the PNACO’s launch, highlighting its mandate to tackle sophisticated criminal networks operating across France. According to sources familiar with the investigation, the PNACO confirmed the Monday morning operation extended beyond Marseille, encompassing locations within the Hérault department.
While authorities have not publicly identified the individuals arrested, they have indicated that the suspected shooter is not currently among those in custody. However, investigators believe the arrests target key figures involved in ordering the hit, individuals with close ties to the powerful drug trafficking organizations that control significant portions of Marseille’s criminal underworld. The operation involved officers from the criminal brigade of the specialized organized crime division of the Bouches-du-Rhône (DCOS) and investigators from the Central Office for the Fight against Organized Crime (OCLCO), demonstrating a coordinated effort at both the regional and national levels.
The Broader Context: Marseille’s Struggle with Narcotrafficking
The murder of Mehdi Kessaci occurred against a backdrop of escalating violence and corruption in Marseille, a city increasingly plagued by drug-related crime. Reports from Le Figaro detail the pervasive influence of drug cartels on the city’s institutions and the daily lives of its residents. The Kessaci family’s outspoken opposition to these networks has made them targets, highlighting the risks faced by those who challenge the status quo.
Amine Kessaci has become a prominent voice in the fight against drug trafficking, publicly denouncing the corruption and violence that grip Marseille. In a February 2026 interview with Le Figaro, he stated, “My life hangs by a thread today,” underscoring the constant danger he and his family face. His advocacy has brought increased attention to the issue, prompting calls for greater government intervention and a more robust response to organized crime.
What’s Next in the Investigation
Those arrested Monday are currently being held in police custody for questioning. French law allows for a maximum of 96 hours of pre-charge detention, during which investigators will gather evidence and attempt to establish the suspects’ roles in the murder of Mehdi Kessaci. Authorities have remained tight-lipped about the specifics of the evidence collected, but have indicated they are pursuing multiple lines of inquiry.
The PNACO is expected to provide further updates on the investigation as it progresses. The focus will likely remain on identifying the individuals who ordered the hit and dismantling the criminal networks responsible for the violence. The case is being closely watched by both the public and law enforcement officials, who see it as a crucial test of France’s ability to combat organized crime and protect those who speak out against it.
The investigation into Mehdi Kessaci’s murder remains ongoing, and authorities have not yet announced a timeline for potential charges. The next significant step will likely be the conclusion of the initial 96-hour detention period, after which prosecutors will decide whether to extend the custody or formally indict the suspects. We will continue to follow this developing story and provide updates as they become available.
If you have been affected by violence or are concerned about crime in your community, resources are available. You can find support and information from organizations like Victim Support Europe: https://www.victimsupport.org/.
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