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251 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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In the beautiful landscapes of Maui, Hawaii, a story of uncertainty and quiet concern unfolds around the disappearance of Douglas Gerald Mantei. At 44 years old, he was a man known to frequent the areas of Pāʻia, Haʻikū, and Kīhei. The last confirmed contact anyone had with him was a telephone conversation with family members on September 29, 2020. A few days later, on October 2, 2020, he was reportedly seen leaving the Wailuku Police Station. This would be the last time he was verifiably s ...Read More
Last Seen: Oct 02, 2020

Victim Details

Oct 28, 2021

Jan 12, 2024

Douglas

Mantei

48

44

72 inches

190 lbs

White / Caucasian

Male

Oct 02, 2020

Wailuku

Hawaii

Maui County

96793

Yes

108526

Maui County Police Department

Wailuku

Hawaii

Maui County

96793

55 Mahalani Street, Hawaii

8082446400

County

Law Enforcement

20-036661

2000-10-13

Maui County Police Department

6195

Brown

Blue

Blue

05/30/2026


Area Last Seen: