A man suspected of plotting to blow up the Holland Tunnel has been arrested in Lebanon, according to U.S. intelligence sources. The FBI has briefed the NYPD on the details of the plot. It is unclear how far into the planning stages the suspect was at the time of the arrest. So far, only one individual has been arrested. A Justice Department official told ABC News this morning that the planning was in its initial phases and mostly overseas and that they do not believe there are links to plotters or operatives inside the U.S. An FBI spokesman said, "At this time, we have no indication of any imminent threat to the New York transportation system or anywhere else in the U.S." More details to come.