A University of Minnesota graduate student was detained Thursday by the U.S. Immigration and Customs Enforcement, a situation the U described as “deeply concerning.” In an email to students Friday, U officials said the international student, who was not identified, was detained at an off-campus residence. No other details about the circumstances were immediately available. “We are actively working to gather more details about this incident,” U officials said in the email. “The University had no prior knowledge of this incident and did not share any information with federal authorities before it occurred.” This is a developing story. Check back later with the Minnesota Star Tribune for updates.