Authorities have uncovered what they presume to be a drug-smuggling tunnel in Mexico.
Mexican officials discovered the dingy-looking tunnel on Tuesday in the border city of Tijuana.
The tunnel was located near the city's airport and just two blocks away from the city's federal police offices.
It's believed the tunnel, which runs about 500 feet long, was designed to smuggle drugs into the United States.
Officials there say it lies beneath a house undergoing construction and is equipped with electricity and ventilation systems.
Nine people from the house were arrested during a raid when more than 40 pounds of marijuana were found at the scene.
The passage is apparently unfinished and was not believed to have reached U.S. soil yet.