A group supporting the Standing Rock Sioux protesters is planning a rally in Center City on Wednesday.

The group will gather on the west side of Philadelphia's City Hall in Dilworth Plaza at 8 a.m., according to an event listing on Facebook.

As of noon on Monday, 236 people were planning on attending the event, with more than 900 interested.

People have also been showing support for the protesters virtually by checking into the reservation on Facebook, in an apparent attempt to confuse police.

Members of the Standing Rock Sioux tribe in North Dakota have been protesting the construction of the Dakota Access Pipeline by Texas-based Energy Transfer Partners, which will stretch nearly 1,200-miles and cross four states.

The tribe says the oil line, which will travel under the Missouri River, could endanger its primary source of drinking water and would also cross a sacred burial ground.