September 1, 2014
U.S. Customs officials have discovered a partly built tunnel under a southbound lane at the border crossing in Nogales.
Authorities said Monday that they found the man-made tunnel after noticing what appeared to be a sinkhole forming in a lane at the port of entry.
The lane has been cordoned off and restricted to all traffic.
Authorities are also keeping an eye on the other lanes at the port.