Police investigators inspect the stage area after an accidental explosion during a music concert at the Formosa Water Park in New Taipei City, Taiwan, early Sunday, June 28, 2015. AP Photo
Two men walk at the explosion site of the water park in Pali district. More than 500 people were injured, almost 200 of them seriously, when a ball of fire ripped through a crowd at a water park.SAM YEH/AFP/Getty Images
Concert spectators tend to injured victims after an accidental explosion during a music concert at the Formosa Water Park in New Taipei City. The New Taipei City fire department says 200 people were injured in an accidental explosion of colored theatrical powder Saturday night near a performance stage where about 1,000 people were gathered for party. (Central News Agency via AP)
In this screen grab taken from ETTV, injured concert spectators are treated after an accidental explosion during a music concert at the Formosa Water Park. (ETTV via AP)
Emergency rescue workers and concert spectators tend to injured victims from an explosion during a music concert at the Formosa Water Park. (AP Photo)
Injured victims are treated after an accidental explosion during a music concert at the Formosa Water Park in New Taipei City. 200 people were injured in an accidental explosion of colored theatrical powder. (Central News Agency via AP)