While inspecting a storm drain, authorities found a concrete access panel embedded in the storm drain floor. Upon removing the panel, they located an illicit tunnel containing numerous tools, a core drill and forced air ventilation. The passageway stretches for approximately 160ft (48.7m) and is roughly 2ft (0.6m) wide by 3ft (0.9m) tall. About 153ft (46.6m) of the tunnel is located within the US, with 7ft (2.1m) in Mexico. A water line, storm drain pipe and two fibre optic lines were exposed inside the passageway.
No people or drugs were found inside the tunnel and no arrests have yet been made in the case, which remains under investigation by the Nogales Tunnel Task Force.
