At least three people were seriously injured in a knife attack in the Austrian capital.
The assailant, who is being chased, attacked pedestrians, according to local media. His motives remain unknown.
The identity of the perpetrator remains unknown. He appears to have accidentally attacked pedestrians on the road, according to Austrian news reports.
A man and two women between the ages of 40 and 50 suffered serious injuries during the attack and are being treated.
The incident took place near the famous Prater Park in Vienna.
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