A report in Watson says that all three emergency services - police, fire and ambulance - attended the store at Bahnhofstrasse 77 after receiving a call shortly after 10am today.
An overheated and smoking iPhone battery forced the evacuation of about 50 people from an Apple Store in Zurich on Tuesday and left an employee slightly injured, police said. It seems a store assistant was removing the battery from an iPhone 6S Plus when it overheated and burnt his hand.
"At the same time, there was a build-up of smoke, resulting in customers and employees having to leave the business temporarily", a police statement said. Six other people received medical care on site - presumably for smoke inhalation - but none required hospital treatment.
Apple hasn't commented on the evacuation, however it is believed the device is now being examined by the Zurich Forensic Institute to determine the cause of the issue. It then began emitting smoke, prompting the staff to throw quartz sand on it to contain the smoke and allow it to be ventilated. "They sprinkled quartz sand over the overheated battery so that the smoke could be contained and sucked out after switching on the ventilation", a police statement said.