The Portland Police Department's Criminal Investigation Division (CID) is staffed by a lieutenant and four investigators. Each investigator is a sworn police officer who has had experience as a patrol officer before moving to the more specialized area of criminal investigations. In addition to crime scene investigations, CID personnel are trained in evidence collection, crime scene forensics, and interviewing and interrogation.
Detectives are responsible for investigating all criminal offenses reported to the police department. They handle misdemeanors and felonies including crimes against people and property, animal cruelty, and many others. They are also responsible for: