U.S. agents find 'sophisticated' tunnel at Mexico border

Officials said the tunnel stretched from a Mexican town into neighborhood in in San Luis, Arizona.

A press release from U.S. Immigration and Customs Enforcement said it was three feet wide and four feet high.

A border patrol agent said it stretched between two and three hundred yards.

Officials said they believe the tunnel was unfinished and intended for long-term use.

No arrests have been made.