The phrase "alleged mistreatment" means that someone is accused of being treated badly or unfairly, but it has not been proven to be true yet. Full definition
Under investigation for alleged mistreatment of a student manager, Siena College men's basketball coach Jimmy Patsos resigned Friday after five seasons with the Saints. (wamc.org)
Hobika was named the agency's new leader on the first of this month, but published reports of alleged mistreatment at his private practice raised immediate concerns. (news.wbfo.org)
The bottom 46 of those have been sued in nursing home abuse and neglect lawsuits alleging mistreatment or poor care. (floridanursinghomelawyerblog.com)