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Domestic Toxins Threat: DHS Urges Enhanced Detection Training

2/6/2026

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Summary

Story summary

The Department of Homeland Security bulletin reports rising use of chemical and biological toxins by domestic partners to harm or kill.
Toxins such as cyanide and ricin have circulated over the past five years, complicating detection and prosecution.
The bulletin cites a dentist convicted of murdering his wife with arsenic and cyanide and urges enhanced training and coordination to address the threat.

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Story summary

The Department of Homeland Security bulletin reports rising use of chemical and biological toxins by domestic partners to harm or kill.
Toxins such as cyanide and ricin have circulated over the past five years, complicating detection and prosecution.
The bulletin cites a dentist convicted of murdering his wife with arsenic and cyanide and urges enhanced training and coordination to address the threat.