US engineer caught on camera poisoning colleague’s water bottle
A California chemical engineer, David Xu, who pleaded no contest to poisoning a colleague, was captured on hidden-camera footage allegedly tampering with her water bottle with a toxic heavy metal, cadmium. Xu, a metallurgist at Berkeley Engineering and Research, poisoned his colleague, Rong Yuan, through her food and drinking water for nearly 18 months between Read More: https://punchng.com/us-engineer-caught-on-camera-poisoning-colleagues-water-bottle/
A California chemical engineer, David Xu, who pleaded no contest to poisoning a colleague, was captured on hidden-camera footage allegedly tampering with her water bottle with a toxic heavy metal, cadmium. Xu, a metallurgist at Berkeley Engineering and Research, poisoned his colleague, Rong Yuan, through her food and drinking water for nearly 18 months between
Read More: https://punchng.com/us-engineer-caught-on-camera-poisoning-colleagues-water-bottle/
About this article
- Length
- 58 words · 1 min read
- Published
- October 12, 2026
- Byline
- Punch Newspapers
- Source
- Punch Nigeria