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Monte Kosa Missing Person Case

Last seen in Copper River, Alaska on Jun 21, 1991

Victim Details

Created

Feb 28, 2019

Case Added

Sep 27, 2022

Firstname

Monte

Lastname

Kosa

Current Age

Age At Disappearance

Height

69 inches

Weight

180 lbs

Ethnicity

White / Caucasian

Gender

Male

Last Seen

Jun 21, 1991

City

Copper River

State

Alaska

County

Valdez–Cordova Census Area

Tribal Land

Agency ID

48465

Agency Name

Alaska State Troopers

Agency City

Anchorage

Agency State

Alaska

Agency County

Anchorage Borough

Agency Zip Code

99507

Agency Contact

Malia Miller

Contact Job Title

Missing Persons Clearinghouse Manager

Agency Address

5700 East Tudor Road, Alaska

Agency Phone

9072695511

Agency Jurisdiction

State

Agency Type

Law Enforcement

Agency Case #

910040183

Agency Report Date

1991-06-21

Primary Agency

Alaska State Troopers

CaseContributors

9773

Hair Color

Brown

Left Eye Color

Blue

Right Eye Color

Blue

Last Updated

08/07/2026

Area Last Seen:

Case Description

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On a summer day in June of 1991, 41-year-old Monte Loren Kosa was with five other people on a boat in the vast wilderness of Alaska. Their vessel was navigating the Copper River near a place called Haley Creek. The powerful currents and unpredictable nature of the river turned a seemingly ordinary outing into a tragedy. The boat capsized, plunging all six individuals into the cold, rushing water. While three people managed to survive the ordeal, Monte Kosa, along with Loren Kosa and Harry Rochel ...

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