Protesters against the Dakota Access Pipeline hung a massive sign from the rafters of U.S. Bank Stadium Sunday, during an NFL game between the Minnesota Vikings and the Chicago Bears.

Two protesters climbed the rafters of the stadium and hung a sign reading “Divest #NoDAPL,” according to a press release sent by the organizers to reporters at the stadium.

Stadium officials cleared fans from the seats below the rafters, Minneapolis Patch reported.

The protesters are urging U.S. Bank to divest from the Dakota Access Pipeline, which has been protested because it would cross important Native American sites. Last month, the Army Corps of Engineers denied the final permits and said it would instead conduct an environmental impact review of the 1,170-mile pipeline project.

“The pipeline’s route violates treaty rights of the Standing Rock Sioux Tribe and poses a significant threat drinking water and the health of the Missouri River,” the protesters' release said.

Was just emailed this press release about the protest at US Bank Stadium. pic.twitter.com/kQ4lxA1hOl — Matt Vensel (@mattvensel) January 1, 2017

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The organizers said U.S. Bank has millions of dollars in credit lines to the parent company of the Dakota Access Pipeline.