The explosion occurred on Thursday afternoon at a chemical company in Krems, Austria.
According to district fire brigade commander Martin Boyer, two people were in the building at the time.
One person was rescued from the building with injuries but rescue teams are still searching for the other.
Mr Boyer told APA that “half the building was swept away” by the explosion, which could be heard across the town.
One person in Krems at the time said: “The whole city was shaking.”
Additional reporting by Monika Pallenberg
UPDATES TO FOLLOW…
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