# Long Island cops say ‘Thrill Killer’ may be suspect as 6 cold case victims finally ID’d

- URL: https://talkfuse.com/story/long-island-cops-say-thrill-killer-may-be-suspect-as-6-cold-case-victims-finally-idd/
- Published: 2026-11-12T20:15:46+00:00
- Updated: 2026-11-12T20:38:53+00:00
- Original publisher: New York Post (publisher lean: Right)
- Original article: https://nypost.com/2026/11/12/us-news/long-island-cops-say-thrill-killer-may-be-suspect-as-6-cold-case-victims-finally-idd/
- Topics: World

## Key points

- DNA testing identified six long-unidentified victims in Suffolk County.
- One may have been killed by the “Thrill Killer”.
- About 210 victims in county cases remain unidentified.

## Summary

Suffolk County investigators have identified six people whose remains had gone unidentified for decades, using advanced DNA testing. Three are believed to have been murdered, and the identifications may help families find answers and investigators pursue justice.

One victim, “Montauk Mary”, was identified as 73-year-old Sofia Margherita Marrone, found shot in Montauk in 1978. Investigators suspect Richard Biegenwald, known as the “Thrill Killer”, because the bullets match those used in his killings, but say they cannot yet confirm he was responsible. The other identified victims were Ramon Perez Y Rivera, Antionette Rugg, Kyong-Ok Kim, Omelios Steward and Andreas Kupke; their deaths include cases of suspected homicide, possible drowning and undetermined causes. Suffolk County has about 244 unsolved death cases from 1970 to 2025, with roughly 210 victims still unidentified.

---
Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.