A New Mexico town ordered the nonprofit We Build The Wall to “cease and desist” construction on a U.S.-Mexico border fence on Tuesday for lacking proper permitting.

The completed section of the privately-funded border fence, which runs about half a mile, violates a Sunland Park city ordinance. City officials were barred from inspecting the wall last week and the property owner submitted an incomplete application to build a fence on his land, Sunland Park Mayor Javier Perea said in a Tuesday press conference.