CCA-2026-010Case Open

Alcatraz Escape — Morris & Anglin Brothers

Escape / Missing Persons · San Francisco Bay — Federal (USMS) · 1962

Case Overview

Objective

Evaluate the 2018 survival letter and Danish ocean current modeling to determine the probability of survival and current whereabouts.

Synopsis

Frank Morris and brothers John and Clarence Anglin vanished from Alcatraz Federal Penitentiary on June 11, 1962. U.S. Marshals warrants remain active. A 2018 letter claiming to be from John Anglin was inconclusive. Danish ocean current modeling suggests survival was possible.

Current Research Angle

2018 letter DNA analysis. Danish ocean current survival modeling.

Research Tasks

5 tasks

01Document 2018 letter DNA analysis status and findings
02Review Danish ocean current survival modeling methodology
03Map the June 11, 1962 escape timeline and route
04Compile all USMS public statements on active warrants
05Document all reported sightings with credibility assessment

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Evidence Files

7 files

2018 Survival Letter — TranscriptDocument
Danish Ocean Current Modeling StudyAnalysis
Escape Route ReconstructionAnalysis
USMS Active Warrant SummaryDocument
FBI Investigation SummaryDocument
Reported Sightings LogDocument
Alcatraz Cell Block B-156 EvidenceForensic

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FOIA Requests

U.S. Marshals Service — Fugitive OperationsSubmitted
FBI — San Francisco Field OfficePending

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Case Stats

Research Tasks: 5
Evidence Files: 7
Entities: 4
Status: Open
Prosecution: None

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