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Murder-Suicide Shocks Port Jefferson Community: Couple Found Dead

2/11/2026

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Summary

Story summary

Paul Trefimovich, 68, shot his girlfriend, Valerie Kopetic, before taking his own life at their Port Jefferson home.
Authorities discovered the bodies after Kopetic failed to show up for work, prompting a welfare check.
Police arrived around 11 in the morning, finding both individuals deceased, indicating a murder-suicide.
The investigation is ongoing, with no disclosure about prior domestic incidents at the residence.

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Story summary

Paul Trefimovich, 68, shot his girlfriend, Valerie Kopetic, before taking his own life at their Port Jefferson home.
Authorities discovered the bodies after Kopetic failed to show up for work, prompting a welfare check.
Police arrived around 11 in the morning, finding both individuals deceased, indicating a murder-suicide.
The investigation is ongoing, with no disclosure about prior domestic incidents at the residence.