At least 12 tons of marijuana were seized and 22 people detained by authorities after a secret tunnel was discovered along the United States and Mexico border on Thursday.
Officials are still retrieving drugs from the tunnel, so the total amount of paraphernalia could increase as the investigation continues. Currently, the seized marijuana has an estimated street value of about $6 million, according to a NBC affiliate.
The tunnel, located just south of San Diego, is believed to be about 800 yards in length with air ventilation, rails to transport paraphernalia and a lighting system.
The owner of the business next to the raided warehouse told NBC San Diego that he had believed the facility, which had been opened for two months, to be a carpet shop.