Polk County, Minnesota (trfnews.i234.me) – On May 29, 2025, Qianli Chu, a 50-year-old chemistry professor at the University of North Dakota, was arrested in Crookston, Minnesota, as part of an undercover sex sting operation conducted by the Polk County Sheriff’s Office and the Minnesota Human Trafficking Investigations Task Force. The operation involved law enforcement officers posing… Continue reading UND Professor Arrested in Polk County Sex Sting Targeting Minors – trfnews.i234.me