Police say no suspicious packages or devices have been located after a bomb threat was sent to schools in the Columbia Heights neighbourhood, a suburb of Minneapolis, on Monday.
Multiple schools in the district, where a number of students have been detained in recent weeks as part of Immigration Customs Enforcement (ICE) actions in Minnesota, were nonetheless forced to close for the day.
Columbia Heights Public Schools said it closed the schools out of an abundance of caution following a credible threat. Classes will resume on Tuesday.
The school closures come as protests against ICE continue in Minnesota and across the US.
Among the students detained by federal agents in the Columbia Heights district was five-year-old Liam Ramos.
