Young people from Sorso against those from Sennori . This would be one of the backgrounds of the episode on Sunday in Sennori which saw the stabbing of a 21-year-old , hospitalized in intensive care, and other peers .

Tensions between the boys from the two towns would have pre-existed the violence, with other interventions to separate the two factions also by the police. But what caused the aggression is still a mystery , despite the many versions circulating, and Alessio Tonzanu, the 18-year-old accused of attempted murder, did not solve the mystery today in court in Sassari . In fact, during the validation, in front of the investigating judge Gian Paolo Piana, he availed himself of the right to remain silent .

Prosecutor Lara Senatore has urged confirmation of the precautionary measure in prison, where Tonzanu has been since Sunday, while defense lawyers Chiara Murgia and Gianluigi Poddighe have requested house arrest. The judge has reserved his decision.

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