The incident occurred as the repair worker was removing battery from an iPhone, subsequently overheating and leaving him with minor burns on his hand. “At the same time, there was a slight build-up of smoke, which led to around 50 customers and employees having to leave the business temporarily,” a police statement said. “The staff responded well and correctly. It sprinkled quartz sand over the overheated battery so that the smoke could be contained and sucked out after switching on the ventilation.” It further added, “Seven people received medical attention, but none of them had to be hospitalized.” While Apple hasn’t yet released an official statement on the matter, the battery and the device are now believed to be examined by the Zurich Forensic Institute to determine the cause of the incident. Source: Reuters