CITY OF PHILADELPHIA PERSONNEL DEPARTMENT
This is responsible law enforcement work investigating crimes and performing other related assignments
in plain clothes. Work differs from that of a police officer in that incumbents are responsible for making and
completing investigation of crimes of a more serious nature.
Work is performed under the general supervision of a higher level police officer. Assignments require
evaluative thinking and are carried out according to departmental precedents, policies, rules and regulations.
Employees exercise a controlling impact on the investigation of crime within as assigned area. Work involves
regular exposure to uncontrolled and/or unpredictable conditions and frequent exercise of moderate physical
TYPICAL EXAMPLES OF WORK (ILLUSTRATIVE ONLY)
- Investigates major crimes such as homicide, robbery, burglary, rape, larceny, or fraud in an assigned
specialty throughout the city; searches crime scenes for physical evidence; locates and interrogates witnesses;
takes statements from witnesses, victims, and suspects.
- Assists in the preparation of cases for court; prepares case summaries and informs prosecuting authority
of the body of evidence available and of persons who may qualify as witnesses; testifies concerning the results
- Completes investigations of minor offenses or routine administrative matters such as vandalism,
malicious mischief, common assault, domestic quarrels, applications for permits to carry firearms, and service
of legal process.
- Investigates all kinds of offenses more serious than disturbing the peace in an assigned geographical area
of the city on an assigned shift; makes arrests; serves legal process; maintains sources of information.
- Patrols a designated area of the city in an unmarked car, looking for suspicious persons and
circumstances; assists uniformed officers in cases of disturbances or riots, investigates misdemeanors to
establish validity of cases and proper placing of charges.
- Arranges for technical assistance, such as that provided by specialists in identification, ballistics,
laboratory analysis, or toxicology.
- Testifies at preliminary magistrate's hearings, grand jury sessions, and coroners courts, concerning the
occurrence of crimes and the establishment of case sufficient to hold or charge suspects.
- Participates in extradition proceedings; assists officers of other law enforcement agencies in
investigations in Philadelphia.
- Prepares progress, interrogation, and other reports concerning investigation in progress.
- Performs related work as required.
REQUIRED KNOWLEDGES, SKILLS AND ABILITIES
- the principles of crime investigation, the techniques of interrogation, and of the identification and
preservation of physical evidence.
- controlling laws and ordinances, particularly laws of arrest and evidence.
- the geography of the city.
- the rules and regulations of the Police Department.
- the techniques of criminal identification.
- first aid principles.
- the use and care of firearms.
- obtain facts by interrogation and interview, to analyze and appraise such facts, and to arrive at logical
conclusions based upon the results of investigations.
- face situations firmly, courteously, tactfully, and with respect for the rights of others.
- react calmly and quickly in emergency.
- speak and write effectively.
- have good intelligence and emotional stability.
MINIMUM ACCEPTABLE TRAINING AND EXPERIENCE(The following statement represents the
minimum training and experience standards which will be used to admit or reject applicants for tests.
Applications submitted by candidates for this class will be reviewed based on training and experience
requirements as approved on 1/53.)
PHYSICAL AND MEDICAL REQUIREMENTS
- One year of experience as a Police Officer.
LICENSES, REGISTRATIONS AND/OR CERTIFICATES
- Ability to physically perform the duties and to work in the environmental conditions required of a
position in this class.
- Possession of a valid proper class motor vehicle operator's license as issued by the Commonwealth of Pennsylvania prior to appointment and during tenure of employment as a Detective.
PAY RANGE: 204
Class Established: 1/1953
Latest Spec. Revision: 4/1976
END OF JOB CLASS SPECIFICATION - 6A12