Spain ? Part of a sports center collapsed in high winds Saturday in the northern Spanish city of Barcelona, killing four children and injuring 16 other people, officials and witnesses said.

Freak winds gusting to 100 mph in some places caused at least six other deaths in Spain and France, officials said, for a total of at least 13 deaths in the last two days.

Emergency workers at the Barcelona sports center could be seen putting three children’s bodies into ambulances and pulling another 16 injured children from the rubble before the rescue effort ended. Accident investigators arrived on the scene to take photographs and carry out other attempts to document the cause of the collapse.

A fourth child died in Sant Joan de Deu hospital, a regional government official said on condition of anonymity as required by agency rules.