They didn't know what the air quality or structural integrity might be. Agents had to wade through chest-high water. The first time through was pretty scary.
Whether they are designed to smuggle drugs, people, weapons or other contraband, these tunnels pose a threat to our nation's security.
They could have been digging this for years, just looking for a place to come up.
There is no doubt that an organization like this will take whatever steps necessary to protect their interests, including taking human lives.
Given the sophistication of this tunnel, it's clear that the people responsible have significant resources at their disposal.
We're chasing down investigative leads throughout San Diego and Southern California. At the same time, we're working cooperatively with DEA and ICE (Immigration and Customs Enforcement) and Mexican authorities in Mexico in the Tijuana area. They're also running down leads.