On the local level, the local police authorities frequently maintain individual photo or “mug” files, alias files, business indexes, modus operandi (MO) files, victimization records and crime patterns. In addition, court records, probation and parole files, and other municipal records such as utilities, may prove valuable. Records of businesses, such as the telephone, electric and water companies, may also be helpful.
Surveillance and stakeouts are important components of kidnap-for-ransom investigations. These activities may require various forms of electronic surveillance, including wiretapping, eavesdropping, automobile locator systems, videotaping and photography. Such efforts may require assistance from other agencies. The investigator should be familiar, not only with the use of such equipment, but also with the laws surrounding their application. The investigator must know when a court order is necessary for the use of electronic surveillance. In no case should an investigator use extralegal means to