WASHINGTON  — Recent communications between Usama bin Laden and Abu Musab al-Zarqawi indicate that bin Laden has "encouraged Zarqawi and his group to focus on attacks inside the United States," multiple U.S. officials told FOX News on Monday.

The sources would not get into detail about how the communication was made or how it was intercepted by the United States. They also said that there is nothing specific in the message, such as maps or references to particular cities or buildings. Rather, the communication simply encourages a "focus" on attacks inside U.S. borders, sources said...