U.S.-Mexico border tunnels could transport bioweapons

Law enforcement and intelligence agencies are on alert in the southwest U.S. after the discovery of a massive and sophisticated tunneling operation across the Mexican border.

Beyond the concern of spreading drug violence in Mexico, authorities are worried that Islamic extremists might be eyeing the porous border as a means to smuggle terrorists or weapons of mass destruction, including bioweapons, into the country, according to the Washington Examiner.

"Four pounds of anthrax - in a suitcase this big - carried by a fighter through tunnels from Mexico into the U.S., are guaranteed to kill 330,000 Americans within a single hour if it is properly spread in population centers there," Al Qaeda recruiter Abdullah al-Nafisi said to a room of supporter in Bahrain, according to the Washington Examiner.

Al-Nafisi was referring directly to efforts in casing the U.S. border region.

"What a horrifying idea; 9/11 will be small change in comparison," Al-Nafisi said, the Washington Examiner reports. "Am I right? There is no need for airplanes, conspiracies, timings and so on."

Officials in the United States take such threats extremely seriously.

"It is only realistic to believe that an American-born terrorist who knows the border region would have already thought of the possibility of using it for the purposes of terrorist activity," a border patrol agent told the Washington Examiner.