The online servers for TheBus and TheHandi-Van are still down due to a cyberattack on Dec. 9.
The Federal Bureau of Investigation and the Cybersecurity and Infrastructure Security Agency are looking into the case, along with local partners.
Law enforcement officials say the priority is to get the websites operating again.
The United States Secret Service Hawaiʻi Pacific Cyber Fraud Task Force is playing a central role in the investigation.
For any information, contact the Honolulu FBI at (808) 566-4300, tips.fbi.gov, or ic3.gov (Internet Crime Compliant Center). Callers may remain anonymous.