Minn. Stat. § 281.18: LANDS MAY BE REDEEMED.

Every parcel of land heretofore sold to the state at any tax judgment sale and now subject to redemption shall continue subject to redemption until the expiration of the time allowed for redemption after the giving of notice of expiration as provided by law. Upon the expiration of such time absolute title to such parcel, if not theretofore redeemed, shall vest in the state.