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The anonymous letters police say could help solve a 35-year mystery

Mark Gregory was killed in a 1991 hit-and-run collision. Now, police believe a series of anonymous letters could hold the key to unlocking the 35-year mystery.

1 report1 sourceMar 20, 2026, 11:16 PM
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ABC AustraliaMar 20, 2026, 11:16 PM

The anonymous letters police say could help solve a 35-year mystery

Mark Gregory was killed in a 1991 hit-and-run collision. Now, police believe a series of anonymous letters could hold the key to unlocking the 35-year mystery.

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