Police in the city of Bern are asking for any witnesses who may have seen a stabbing on a tram on Saturday afternoon.
The victim was able to get off and seek help himself.
The attack was on a tram just before the Europaplatz stop. The attacker is described as 1 meter 80 tall and around 30 years old.
Police are not releasing any motive for the attack.
Heat kills more than the roads
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Geneva left with the bill after G7
Geneva cantonal minister Carole-Anne Kast says Bern gave in too easily to France over who pays for last month's G7 summit in Évian.
High wildfire risks increases further
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HPV vaccines for all
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Yverdon maps its heat island
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Shaqiri meets hundreds of fans in Geneva
Hundreds of football fans packed Geneva's La Praille shopping centre yesterday to meet Swiss star Xherdan Shaqiri.
