SUPERIOR, Wis. — Police have arrested three protesters at an Enbridge pipeline construction site in northwestern Wisconsin.

Authorities say 12 to 15 pipeline opponents gathered at the site in Superior about 9 a.m. Wednesday. Police Chief Matt Markon says one protester attached himself to a piece of equipment that had to be removed with a hand-held metal cutting wheel.

Markon says that protester and a woman were arrested for trespassing and resisting arrest. He says a third was arrested on an unrelated misdemeanor warrant.

It’s the third time in two months that arrests have been made at the site in Superior, where Enbridge is replacing a segment of its aging Line 3 oil pipeline from Alberta. Minnesota regulators will decide in April whether to approve replacing the stretch that crosses northern Minnesota.