Tunnel systems that run between the U.S. and Mexico border are used to transport drugs, people, weapons and other illegal material.
Now, Border Patrol agents are using robot technology to detect tunnels, the Associated Press reports .
Agents in Tucson, Ariz., plan to demonstrate the “tunnel robots” Tuesday.
According to CBP, tunnels are becoming increasingly popular for criminal organizations.
More than 75 tunnels have been found between the border since 2008, the AP wrote.