A terrorist organization whose home base is in the Middle East has established another home base across the border in Mexico.

"They are recognized by many experts as the 'A' team of Muslim terrorist organizations," a former U.S. intelligence agent told 10News.

The former agent, referring to Shi'a Muslim terrorist group Hezbollah, added, "They certainly have had successes in big-ticket bombings."

Some of the group's bombings include the U.S. embassy in Beirut and Israeli embassy in Argentina.

However, the group is now active much closer to San Diego.

"We are looking at 15 or 20 years that Hezbollah has been setting up shop in Mexico," the agent told 10News.