HILL CITY (AP) -- Eight people were arrested in a protest to oppose the construction of the Enbridge Energy Line 3 oil pipeline replacement in northern Minnesota. Authorities say more than 150 people gathered in Aitken County on Saturday to protest.

They blocked a road in one area, then traveled on buses and cars to another area south of Hill City, where authorities say they interfered with construction workers. After ignoring orders to leave, seven people were booked into jail for trespassing on critical infrastructure, and one person was cited and released for failing to leave an unlawful assembly.

Line 3 starts in Alberta, Canada, and clips a corner of North Dakota before crossing northern Minnesota en route to Enbridge's terminal in Superior, Wisconsin.

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