https://www.sandiegouniontribune.com/news/border-baja-california/sd-me-concertina-wire-tj-20190318-story.html

the concertina wire installed under the Trump administration to reinforce the U.S.-Mexico border is now being stolen and used to protect Tijuana residences as the city grapples with a surge in crime, officials confirmed Monday.

Thieves are stealing and selling the same concertina wire installed in November along the border by the Department of Homeland Security, and 15 to 20 arrests have already been made, city officials said.

Contractors were seen Monday at a border fence on the U.S. side of the Colonia Libertad neighborhood of Tijuana, replacing some of the stolen wire.

Some homes in the same area had identical wire installed in front of their homes, as an added layer of protection to their property lines and fences, but residents declined to comment about how they obtained the material.

“I don’t actually live here in this house, so I have no idea how that wire got here,” said one woman who declined to give her name in Colonia Libertad at a house where the razor wire was visible in front.