Border Patrol unveils new cameras that navigate tunnels used to sneak drugs into US

The U.S. Border Patrol has unveiled one of its weapons in the war on drugs.

The agency recently purchased three wireless camera-equipped robots that let border agents remotely navigate the tunnels and storm drainage systems that smugglers use to sneak drugs, guns and people across the border.

Agents held a demonstration of the devices Tuesday in the southern Arizona border city of Nogales.

Dozens of crude tunnels have been discovered in the area over the years.

The agency is using the devices to keep agents out of harm's way. Many tunnels lack proper ventilation, are poorly built and are prone to collapsing.

The 12-pound robots also let agents navigate an underground labyrinth in a fraction of the time it would take an agent to explore the tunnel.