A spokesperson for the facility did not specify what the officer why the officer went to the hospital, but said the officer was taken in an ambulance, where they were treated and released.

Minnesota Correctional Facility - Stillwater, the state's largest prison, is on temporary lockdown after several staff members were possibly exposed to synthetic drugs on Thursday.

Several Stillwater prison staff members were taken to the hospital Thursday following an incident that put the facility into a lockdown, Minnesota Department of Corrections officials said. “Several staff were taken to the hospital out of an abundance of caution,

Jeff Vars, president of AFSCME Local 915, the union that represents corrections workers, said in a statement that an incarcerated man at the Stillwater facility and another at a medium-security prison in Moose Lake had died from suspected overdoses in the last week.

The Department of Corrections says the staff members were brought to the hospital out of "an abundance of caution."

Nine employees at Minnesota Correctional Facility–Stillwater were taken to the hospital on Thursday after being exposed to a "stronger-than-expected" dose of synthetic marijuana being smoked by an inmate, causing them to fall ill.

Officials say nine staff at the Stillwater prison were sent to the hospital Thursday after being exposed to unknown substances in two separate incidents. The Department of Corrections says an officer responding to a man smoking in his cell experienced an adverse reaction that included light-headedness,