To recognize an intrusion place or an intrusion situation from data transmitted with a warning sound.

A crime prevention device 1 receives a warning sound with an ID code issued from a detection sensor group 5, then generates control signals 105 and 108 for controlling operation of a security device 2 and an imaging device 6. A warning sound reception unit 11 receives the warning sound with the ID code issued from the detection sensor group 5. When a warning sound analysis circuit 12 has detected the ID code, the control signal 105 output by a contact signal generation circuit 13 instructs specific crime prevention processing for an abnormality detected by a detection sensor corresponding to the ID code.