After 14 people also lodged a complaint as a result of their injection, on Friday evening in Toulon, after which 6 people lodged a complaint on Saturday evening for the same reason, during the International University Music Festival in Balfour, a new episode of anonymous injection needle attacks returned to the front in Europe, particularly France,

According to Prosecutor Jessica Vonderscher's statement to the Agency, "tingling marks have been observed at festivals, evenings or other nightclubs".

"Only 3 people went to the hospital emergency room for tests, to determine whether they were injected with a particular substance, and if so, what kind of substance."

So far, two persons have been arrested elsewhere in France, including a 20-year-old suspect residing in Toulon, as part of an open judicial investigation on charges of "aggravated armed violence (injection) and premeditated monitoring".

However, the incident was not exclusive to France, but reported similar cases in both Britain, Belgium and the Netherlands.

Britain has been experiencing this phenomenon since last year, monitoring hundreds of cases, but a parliamentary report said there was a lack of data to judge how serious it was.

Nausea and dizziness are at the forefront of regular symptoms in victims' accounts of French media, whether men or women, with visual disorders and high body temperatures. While others did not feel any symptoms, they noticed tingling on the skin or a small hematoma.

Recent incidents are part of a series of facts recorded months ago throughout France, and investigators have tried to uncover their ambiguity, especially in the absence of any trace of theft or complaints of sexual assault after injections, but to no avail.

Cases have doubled since mid-April, and hundreds of incidents have been observed in the cities of Rennes, Nantes, Paris, Grenoble, Bizier, Montpellier and Toulouse without analysis laboratories being able to determine whether the victims were injected with a specific substance.

This is confirmed by the Head of Poison Department at Karch Hospital in the "O de Sen" region of Ile de France, Professor Jean-Claude Álvarez

Alvarez said: "We resolved the blood and urine of the victims, and we also checked the hair. In all these samples, we found nothing. "

He adds: "This is suspicious and confusing. He was entrusted to the laboratory supervised by the analysis of dozens of specimens, as a pharmacology and toxicology expert at the Versailles Court of Appeal. In coordination with the rest of the laboratories that conducted the same analysis, no trace of toxic substances or drugs was detected in the victims' bodies. our right may be empty ".

In view of the difficulty of judgement at this stage of the investigation, the French Ministry of the Interior called for vigilance.

Potential victims were alerted to the police's safety and encouragement to file a complaint and conduct appropriate analyses at the nearest hospital 12 hours before the incident, through video on social networks.