Insurance investigations are usually conucted to investigate matters pertaining to insurance claims that are suspicious or otherwise in doubt for some reason. Investigators in this field have differing specialities and backgrounds. Some insurance companies have their own in-house investigation teams while other companies sub-contract the work to private investigators or private investigation firms. Although such investigations are usually conducted to combat fraud, very often investigators will be working simply to establish the circumstances of a particular claim (for example, in a multi-vehicular road accident involving various parties, claims and insurance companies).