TIJUANA — The structures once harbored drug shipments, hid kidnap victims, covered up entrances to drug tunnels. A list of nearly 100 properties seized by the Mexican government in Baja California from criminal organizations shows most located in Tijuana–from the city’s the wealthiest enclaves to the humblest neighborhoods.

The Mexico City newspaper El Universal posted its findings in an article Friday following a request for information from the federal agency the administers seized properties, known as the Servicio de Administración y Enajenación de Bienes.

The aim was to look at the confiscations made during the height of the government’s campaign against drug groups operating in the state–the five-year period from 2008 through 2012. According to the list, a copy of which was obtained by the UT San Diego, the numbers began small–three confiscations in 2008, four in 2009 and five in 2010. But by 2011, the number spiked to 39 and in 2012 the total was 46.

The list does not give exact addresses but names general areas. The locations listed in 2011 ranged from a public housing complex in Punta Banda south of Ensenada to downtown Playas de Rosarito, to the upscale Agua Caliente area of Tijuana and Colonia Nueva Tijuana, an industrial area of the city near the Otay Mesa border crossing.

The list for 2012 includes several locations in eastern Tijuana where much of the drug violence was concentrated as drug gangs battled each other. Among the locations named are the developments of Villafontana, Villa del Real and Villa del Sol.

In most cases, the confiscated houses have received little publicity, and it is unclear what ultimately happened to them.

But in Tijuana, one property, confiscated following the discovery of drug tunnel entrance in 2003 inside has capitalized on its history: It is La Casa del Túnel, an arts center in Tijuana’s Zona Federal near the San Ysidro border crossing.