Jessen (dpa/sa) - An 87-year-old was seriously injured in a gas explosion in Jessen (Wittenberg district). A police spokesman said he operated a mobile heater with a gas bottle on Thursday. That's when the accident happened. As a precaution, the man was taken to a hospital by helicopter, but he was out of danger. According to the police, the material damage is at most 40,000 euros.