A research scientist at the University of Wisconsin is facing serious criminal charges after allegedly attempting to poison a colleague’s drink following workplace tensions tied to a promotion.
Scientist Charged in Alleged Poisoning Plot
Authorities identified the suspect as Makoto Kuroda, 41, who has been charged with:
- Recklessly endangering safety
- Tampering with a household product with intent to harm
The charges stem from an incident at the university’s Influenza Research Institute in Madison.
Alleged Confession and Motive
According to a criminal complaint filed in Dane County, Kuroda allegedly admitted to contaminating a colleague’s water bottle.
Investigators say the colleague—identified only as “TM”—had recently received a promotion, which reportedly caused tension. Kuroda allegedly felt the colleague’s behavior changed and became increasingly resentful over time.
Chemicals Found in Water Bottle
The incident came to light after the colleague noticed a strange odor and taste in a water bottle left on his desk. After taking a sip, he spat it out and later reported the issue.
Testing revealed a presumptive presence of chloroform, with levels so high that test strips could not measure them accurately, according to the complaint.
Kuroda allegedly admitted to using a mixture of paraformaldehyde and other lab chemicals, placing small amounts in both the water bottle and the colleague’s shoes.
University Takes Immediate Action
In response, the University of Wisconsin placed Kuroda on administrative leave and revoked his access to all lab facilities and research privileges.
University officials confirmed they are conducting an internal workplace investigation alongside the criminal case.
Use of AI and Planning Details
Investigators also allege that Kuroda used the ChatGPT to research harmful chemical dosages. Despite receiving warning prompts, he reportedly proceeded with the act.
Court Proceedings Underway
Kuroda made his initial court appearance, where a $5,000 bond was set. Conditions include:
- No contact with the victim
- Surrendering his passport
- Staying away from university laboratories
The case remains ongoing, and it is not yet clear whether Kuroda has entered a plea.
Ongoing Investigation
Authorities continue to investigate the incident, which has raised concerns about workplace safety and oversight in research environments.