Mexican authorities discovered a 50-foot long tunnel between Sonora and Arizona (VIDEO)

Mexican authorities discovered a 50-foot long tunnel between the state of Sonora and Arizona.

The entrance was found in the Mexican border town of Nogales.

Authorities are investigating the case.

Tunnels are often used by drug traffickers and immigrant smugglers in an attempt to cross the U.S.-Mexico border undetected.

Source: ABC News

The Mazatlan Post