Private-Sector Investigators work in the loss prevention department for retail and warehouse security, as independent or agency private investigators, or as internal and external fraud analysts for an organization. Most businesses that possess an inventory of goods in a warehouse or retail environment have a Loss Prevention (LP) department committed to reducing inventory shrinkage and preventing retail larceny. Private Investigators gather facts and collect evidence to conduct investigations on a variety of different crimes. Internal fraud analysis is primarily concerned with monitoring a company’s own employees, whereas external fraud analysis deals with outside fraudsters.