A shooting-range located at Ferrara,the north of Italy, got explosion and big fire on 10^th,. The explosion made 3 peopledied and 5 people hurt, included 2 firemen. This private shooting-range hasjust opened for business for a few months, it was on the second floor of awarehouse with 400m2 of acreage. When the explosion happened, there were 10people inside. According to the analysis from investigator, gas of certain degree of saturation produced from shootingmight cause this accident. The injured people were sent to hospital nearby,they were not hurt heavily fortunately.