Major Crimes Unit investigates:   -  Deaths and felony assault cases (including domestic violence) -  Robbery -  Digital forensics -  Kidnapping   -  Unlawful imprisonment   Responds to all child death cases within jurisdiction, including suspected Sudden Infant Death Syndrome (SIDS); this is mandated by law.   Special Assault Unit:  -  Investigates sexual assaults and neglect or abuse cases. It also monitors individuals on the state-wide sex-offender registry. Major Accident Response and Reconstruction Unit:   -  Investigates fatality and serious injury accidents; also provides assistance at major crime scenes. Polygraph Unit:   -  Provides polygraph support for criminal investigations and pre-employment screening. Fire/Arson Investigation Unit:   -  Conducts comprehensive fire investigations to determine origin and cause of fires; performs criminal investigation of those fires determined to be arson. Criminal Intelligence:   -  Gathers and shares intelligence products and maintains liaison with state and local law enforcement officers.   -  Collects, evaluates and analyzes incident reports of suspicious activities reported by the public and law enforcement communities in an effort to identify potential trends or patterns of terrorist operations. Criminal Warrants Unit:   -  Handles criminal and material witness warrants issued out of King County courts, performs extradition and transports prisoners between jurisdictions. Special Support Enforcement Unit: -  Enforces court ordered child support. Civil Unit: - Serves legal documents throughout the county, conducts evictions, and enforces orders of the court. AFIS Section: - Promotes public safety and contributes to crime reduction by providing fingerprint identification to criminal justice agencies throughout King County.

Operates a phone line which allows Seattle residents to contact police about non-emergency matters such as:   -  Nuisance reporting -  Crimes that did not just occur -  Suspicious activity -  Fireworks violations -  Graffiti on your property -  ID theft   -  Knowledge that would help a police investigation    Also performs welfare checks.