Chemistry major poisons black roommate for months, pens racist threat on his desk: Prosecutor
![Chemistry major poisons black roommate for months, pens racist threat on his desk: Prosecutor](https://co-a2.freetls.fastly.net/co-static/images/ph-large_2x.png)
College Crimes
An ex-Pennsylvania college student, accused earlier this year of leaving racist graffiti for his black roommate in their dorm room, was arrested for allegedly poisoning him with a toxic metal. Yukai Yang, 22, a chemistry major at Lehigh University, turned himself in Thursday and was charged with attempted murder. Authorities believe Yang slipped thallium—an odorless, colorless, …