A disturbing case from Wisconsin has raised serious concerns about workplace safety after a man allegedly tried to poison his colleague over professional jealousy. The incident took place in a research environment, making the situation even more alarming.
What Happened at the Workplace
The incident occurred at the Influenza Research Institute of the University of Wisconsin-Madison in Madison.
On April 7, authorities were called after an unusual smell was reported inside an office. When investigators checked the area, they found items that tested positive for chemical substances, leading to a deeper investigation.
Alleged Confession by the Accused
The suspect, Makoto Kuroda, 41, later admitted to police that he had tried to harm his co-worker.
According to reports, he allegedly:
- Mixed laboratory chemicals
- Put the mixture inside his colleague’s shoes
- Added a small amount of a chemical to the colleague’s water bottle
Police said he even sent a message to another co-worker stating, “I did it,” indicating awareness of his actions.
Chemicals Used in the Incident
Investigators found that Kuroda used chemicals taken from the lab, including:
- Paraformaldehyde
- Trizol
He reportedly told police that a higher amount of the chemical could be deadly, showing knowledge of the potential danger.
Motive Behind the Act
According to the complaint, the main reason behind the alleged act was workplace jealousy.
Key points include:
- The victim had received a second promotion
- Kuroda had wanted the same position
- He reportedly had personal complaints about the colleague’s work habits
However, prosecutors say the promotion was the primary trigger.
Legal Charges and Status
Kuroda has been charged with:
- Recklessly endangering safety
- Tampering with household products
He was arrested on April 10 and is currently being held in jail with a $5,000 cash bond.
Restrictions and Court Updates
Authorities have also taken additional action:
- Kuroda has been banned from the university campus and its labs
- His next court appearance is scheduled for April 21
Why This Case Is Concerning
This case raises several serious issues:
- Misuse of hazardous chemicals in a workplace
- Workplace conflicts escalating into dangerous acts
- Risks in research environments where chemicals are easily accessible
- The importance of strict safety and monitoring systems
It also shows how personal frustration and jealousy can lead to harmful decisions.














