A major drug trafficking trial linked to Ibiza has opened before the Provincial Court of the Balearic Islands, bringing 15 defendants before the court in connection with Operation Adriático, the investigation that uncovered one of the largest synthetic drug seizures ever recorded in Spain.

The first session, held in Palma on Wednesday, September 9, saw seven defendants acknowledge their involvement in the offences alleged by prosecutors, while lawyers representing other defendants asked the court to declare the proceedings null and void over alleged irregularities during the Guardia Civil investigation.

The case centres on an international trafficking network that investigators said was operating principally between Ibiza, Málaga and other parts of Europe. The investigation culminated in September 2024 with the seizure of more than one million ecstasy tablets and hundreds of kilograms of other drugs.

The trial is expected to continue through Friday.

Fifteen Defendants Face Serious Drug Trafficking Charges

A total of 15 people are being tried by Section One of the Provincial Court of the Balearic Islands.

The defendants face accusations including offences against public health and membership of a criminal organisation. These are allegations being examined by the court, and the defendants who have not admitted the charges remain entitled to the presumption of innocence until a final judicial decision is reached.

According to reporting from the opening hearing, seven defendants acknowledged the facts attributed to them by the prosecution and indicated that they would accept the prison sentences ultimately imposed by the court.

The remaining defendants have maintained their challenges through their legal representatives, focusing in particular on how evidence was obtained during the investigation.

The prosecution is seeking prison sentences that together amount to around 140 years for the group, according to reporting from the first day of proceedings.

Defence Lawyers Challenge the Investigation

One of the main developments during the opening session was the request by several defence lawyers for the proceedings to be suspended and the case declared null.

The defence has alleged that investigators committed procedural irregularities during the operation, including carrying out searches without the necessary judicial authorisation.

These claims have not been established as fact. They are arguments raised by the defence and will have to be assessed by the court in accordance with the applicable procedural and evidentiary rules.

The question of whether evidence gathered during the investigation can legally be used is potentially significant, particularly in a case involving multiple defendants and a large quantity of seized material.

The court will therefore have to consider both the prosecution's evidence and the objections raised by the defence as the trial progresses.

The Case Was Previously Challenged Over Jurisdiction

The trial is taking place before the Provincial Court of the Balearic Islands following an earlier dispute over which court should hear the case.

Some defence lawyers had argued that the investigation extended across several parts of Spain and other European countries and that the proceedings should therefore be transferred to the Audiencia Nacional, Spain's national-level criminal court.

That request was rejected earlier in 2026, leaving the case before the Provincial Court in Palma.

The decision means that the Ibiza-centred investigation is now being examined within the Balearic Islands' provincial judicial system despite its international dimension.

Operation Adriático and the 2024 Seizure

The origins of the trial date back to an investigation launched in 2024 by the Guardia Civil's specialised organised crime and anti-drug units.

According to the Guardia Civil, investigators detected a network suspected of introducing synthetic drugs into Ibiza, with connections extending to other parts of Europe.

The investigation began in the spring of 2024 and included surveillance of vehicles travelling from the Netherlands. Investigators identified what they considered suspicious movements and subsequently intercepted a vehicle at Irún, close to the French border, where around 25 kilograms of synthetic drugs were reportedly discovered in a concealed compartment.

The investigation eventually led to the final phase of Operation Adriático on September 5, 2024.

Ten searches were carried out, eight in Ibiza and two in Benalmádena, Málaga. Nine people were arrested during that phase of the operation.

The Guardia Civil subsequently described the seizure as the largest interception of ecstasy tablets recorded in Spain.

More Than One Million Ecstasy Tablets

The scale of the seizure is one of the reasons Operation Adriático became one of the most significant drug investigations associated with Ibiza in recent years.

Authorities reported the seizure of 1,071,327 ecstasy tablets, weighing approximately 357 kilograms.

In addition, investigators seized:

• 212 kilograms of ketamine

• 73 kilograms of MDMA

• 20 kilograms of cocaine

• 21 kilograms of cocaine commonly referred to as tusi

• 10 kilograms of hashish

• 6 kilograms of marijuana

• 3 kilograms of a substance known as "sugar", described by investigators as being used in the production of tusi

The total amount of seized drugs was reported at more than 700 kilograms.

At the time of the operation, the Guardia Civil estimated the value of the drugs at more than €25 million.

Ibiza Was a Central Focus of the Investigation

The investigation had an international dimension, but Ibiza was a central location in the alleged trafficking operation.

Investigators said the network used vehicles equipped with concealed compartments to transport drugs into the island. The intercepted material was subsequently linked to properties and vehicles searched during the operation.

The Guardia Civil also said at the time that the organisation involved people from different nationalities and operated across several European locations.

The original investigation involved cooperation with Italian authorities, reflecting the cross-border nature of the suspected trafficking network.

The prosecution case presented at trial will now have to establish the individual roles allegedly played by each defendant, rather than simply demonstrating that drugs were seized during the wider operation.

Why the Evidence Will Be Crucial

Because several defendants are challenging the legality of parts of the investigation, the handling of evidence is expected to be an important issue during the proceedings.

The defence allegations concerning searches and authorisations could affect the admissibility of particular evidence if the court determines that legal requirements were not followed.

At the same time, the prosecution will seek to establish its case against the defendants using the evidence collected during a lengthy investigation involving surveillance, searches, seizures and alleged links between different individuals and locations.

The court's assessment of those issues will be essential in determining what evidence can ultimately be relied upon.

A Case With Major Implications for Ibiza

The scale of Operation Adriático brought considerable attention to Ibiza when the seizure was announced in September 2024.

The discovery of more than one million ecstasy tablets was described by authorities as unprecedented in Spain, while the broader seizure included substantial quantities of ketamine, MDMA, cocaine and other substances.

The case also highlighted Ibiza's position within international drug trafficking routes, particularly in relation to synthetic substances associated with nightlife markets.

However, the opening of the trial marks a different stage of the process. The focus is now on determining individual criminal responsibility through evidence presented before the court, rather than simply the scale of the original police operation.

The Trial Continues in Palma

The proceedings are continuing this week before the Provincial Court of the Balearic Islands.

Seven defendants have already acknowledged the facts alleged against them, while other defendants are continuing to challenge the prosecution's case and have raised claims concerning the legality of parts of the investigation.

The court will now examine the evidence, legal arguments and individual circumstances of the 15 defendants before reaching its conclusions.

For Ibiza, the trial represents the judicial chapter of a case that began with one of the largest synthetic drug seizures ever recorded in Spain. The final outcome will depend on the evidence accepted by the court and the decisions ultimately reached regarding each defendant.