La polizia ha effettuato un'operazione giovedì sera poco prima delle 21.00 alla stazione di Däniken, in seguito a un allarme bomba. Un treno è stato fermato e i passeggeri sono stati fatti scendere. Il traffico ferroviario tra Olten e Aarau è stato temporaneamente interrotto. I vagoni e la motrice sono stati perquisiti, ma non è stato trovato alcun dispositivo esplosivo, come confermato dalla polizia cantonale solettese. Nessuno è rimasto ferito, ma un passeggero è stato arrestato.
L'individuo, che aveva avvertito i passeggeri del pericolo di una possibile esplosione, è stato provvisoriamente fermato, interrogato e sottoposto a una perizia medica. Si tratta di un 49enne con passaporto italiano senza fissa dimora in Svizzera. Il traffico ferroviario ha potuto riprendere poco dopo mezzanotte, ma sono previsti ritardi e cancellazioni di treni, hanno detto le Ferrovie federali svizzere. Alcuni passeggeri sono stati portati nelle stazioni vicine da autobus sostitutivi.
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