Deputy Chief Forest Smith of Mesa Fire and Medical says it's not immediately known what caused the explosion that occurred Tuesday morning at Kelly's Kawasaki.
Smith says the victims were taken to hospitals for treatment of injuries that included burns and shrapnel wounds.
Smith says all three victims are male, but he didn't know their ages. Further details were not immediately available.
The dealership is located on South Country Club Drive between West Broadway Road and West Southern Avenue.
Copyright 2015 The Associated Press modified.