At least one explosion was reported just beyond the perimeter fence at Geneva Airport, Switzerland's second-busiest airport, on Friday afternoon. The building where it happened is reportedly a welcome center for refugees.
According to local news reports, the fire started on the top floor of the building under construction, where insulation was being installed. At least five explosions have been reported, the result of the fire setting of gas cylinders. According to reports, there are five more that have yet to go off.
Flights to the airport are being diverted, while takeoffs are being left to the pilots' discretion.
The US State Department issued a travel alert, saying "avoid the area and seek shelter if in vicinity."