Suspicious package at Line 3 protest in northern Minnesota was not an explosive, deputies say By FOX 9 Staff article Investigators blocked the area near the Line 3 construction site after a "suspicious package" was thrown by protesters. (Supplied) PERCH LAKE TOWNSHIP, Minn. (FOX 9) - A "suspicious package" that deputies say was thrown by members of a Line 3 pipeline protest in northern Minnesota was not an explosive, deputies said Friday. The Carlton County Sheriff's Office sent out a warning to nearby residents Friday afternoon after the device was thrown by members of a crowd of protesters at the construction site on Ditchbank Road in Perch Lake Township, west of Cloquet, Minnesota.