| Agencyname: | County of Hawai'i, Office of the Prosecuting Attorney Office, Criminal Investigations Unit |
| Motto: | Justice with Integrity and Commitment |
| Country: | United States |
| Countryabbr: | USA |
| Divtype: | State / County |
| Divname: | County of Hawaii |
| Sizearea: | 5,000 sq.mi. |
| Sizepopulation: | 225,000 |
| Legaljuris: | State of Hawaii, County of Hawaii |
| Governingbody: | Hawaii Legislature |
| Police: | yes |
| Headquarters: | Hilo, Hawaii |
| Sworntype: | Criminal Investigators |
| Sworn: | >30 |
| Unsworntype: | Civilian |
| Chief1name: | Kelden B.A. Waltjen |
| Chief1position: | Prosecuting Attorney |
| Chief2name: | Stephen L. Frye |
| Chief2position: | First Deputy Prosecuting Attorney |
| Chief3name: | (Vacant) |
| Chief3position: | Chief Investigator |
| Parentagency: | State of Hawai'i, Attorney General’s Office |
| Child1agency: | County of Hawai'i, Office of the Prosecuting Attorney |
| Vehicle1type: | County Subsidized Personally Owned Vehicles |
| Website: | County of Hawaii, Office of the Prosecuting Attorney Website |
The County of Hawaii, Office of the Prosecuting Attorney, Criminal Investigations Unit is the law enforcement agency for the County of Hawaii, Office of the Prosecuting Attorney. It is tasked with full state police powers to: enforces all State laws and Department rules; conduct investigations of the most complex, confidential and diverse civil/criminal cases being considered and/or readied for court action and prosecution; obtains additional information, evidence, and facts to clarify or substantiate findings of law enforcement agencies; secures, interviews, and interrogates witnesses complainants, and suspects; conducts highly confidential investigations for the Attorney General's Office; special career criminal suppression investigations; arrest subjects, processes and serves legal papers; conduct warrant investigations and extraditions; coordinates investigations and works closely with the Hawai‘i Police Department, military, and federal law enforcement agencies, and all levels of the court system.[1]
Investigators are armed and have the powers and privileges of police officers with statewide jurisdiction to effect arrest, and conduct criminal investigations. Most Investigators are already experienced law enforcement officers with other state or local police agencies prior to being employed with the Office.[2]
Investigators conduct investigations of the most complex, confidential, and diverse criminal cases being considered and/or readied for court action and prosecution; obtains additional information, evidence, and facts to clarify or substantiate findings of law enforcement agencies; secures, interviews, and interrogates witnesses complainants, and suspects; conducts highly confidential investigations for the Attorney General's Office; special career criminal suppression investigations; arrest subjects, processes and serves legal papers; conduct warrant investigations and extraditions; coordinates investigations and works closely with the Hawai‘i Police Department, military, and federal law enforcement agencies, and all levels of the court system.[3]
Under authority of the Attorney General; the Office of the Prosecuting Attorney is the legal agency responsible for prosecuting all violations of State and County laws, ordinances, rules, and/or regulations on behalf of the Big Island community as provided by Hawai‘i County Charter Article IX: Chapter 28; H.R.S. 28–1.[4]
Criminal Investigations Unit uses the Hawaii State Law Enforcement Rank Structure;
Investigator's work with the Victim Service Unit in helping crime victims through the difficult process.[6]