Chapter 20: Recognition, Control, and Investigation of Drug Abuse
Swanson: Criminal Investigation, 13e
IM–20 | 14
department.
D. Surveillance
Surveillance, defined as the “surreptitious observation of persons, places, objects, or
conveyances for the purpose of determining criminal involvement,” is an excellent tool used
by narcotics investigators to gather information about a suspect. Before any type of
surveillance begins, officers should have already gathered basic information about a suspect.
Searching through discarded trash is another supplement to surveillance. Trashing, as it is
sometimes called, does not require a warrant, because there is no expectation of privacy with
discarded trash that is essentially in plain view for all to see.
E. Undercover Operations
These operations are very dangerous and can take a large toll on the personal lives of
undercover officers. However, they are quite useful in identifying participants in drug
conspiracies, whether they involve manufacturers, distributors, or users. Buying drugs from a
suspect is the best means of gathering evidence about a drug operation. Drug buy operations
by undercover officers generally fall under one of four categories.