MCF-Stillwater is restricting movement after 90 inmates tested positive for COVID-19 in the past week.
The lockdown, which was announced Sunday, was partially lifted at noon Monday so incarcerated individuals could leave their cells in small groups to make calls, shower and do other necessary activities.
The 90 new cases bring the Stillwater prison's total number of COVID-19 cases to 115, with 88 of the 90 new cases involving inmates from two living units: Cell Hall D and Atlantis.
There are 1,273 people incarcerated at the prison, so approximately 9% of the prison's population is currently infected.
"We are thankful that those who are currently positive at Stillwater have either no symptoms or only mild symptoms, but we know that could change quickly," release from the Minnesota Department of Corrections said. "We are monitoring each person closely for any signs of a worsening condition. One 70-year-old is receiving medical attention outside the facility."
Anyone who tested positive can only leave their cell with other men who tested positive, and the same goes for those who have tested negative.
In July, two inmates – a man in his 70s and a man in his 40s – at the prison in Faribault died the same week after contracting the disease caused by SARS-CoV-2 (novel coronavirus).