Plot to flood Manhattan averted

FBI agents monitoring chat rooms discovered the plot.
NEW YORK (AP) -- A terrorist plot to flood lower Manhattan by attacking train tunnels under the Hudson River used by tens of thousands of commuters was thwarted before the conspirators could travel to the United States, authorities said Friday.
Eight suspects -- including an al-Qaida loyalist arrested in Lebanon and two others in custody elsewhere -- had hoped to pull off the attack in October or November, federal officials said. But federal investigators working with their counterparts in six other countries intervened.
"It was never a concern that this would actually be executed," Homeland Security Secretary Michael Chertoff said in Boston. "We were, as I say, all over this."
Initial reports said that the terrorists wanted to attack the Holland Tunnel, a major thoroughfare for cars entering the island of Manhattan. But officials said the group had specifically mentioned only the train tunnels under the Hudson River used by commuters on their way to New York and New Jersey.
"This is a plot that involved martyrdom and explosives" and focused on the "tubes that connect Jersey and lower Manhattan," said FBI Assistant Director Mark J. Mershon.
The other five suspects remained at large.
A federal law enforcement official said the suspects hoped to inflict damage on the U.S. economy.
Hoping to flood Wall Street
The men believed that by bombing the train tunnels, they could unleash a severe flood in lower Manhattan, including Wall Street, said the official, who spoke on condition of anonymity because the investigation is ongoing. The official said investigators believe that an attack on a train tunnel, unlike the Holland Tunnel, could have achieved that goal.
Investigators decided in recent weeks that the "plotting for this attack had matured to a point where it appeared that the individuals were about to move forward," Mershon said. "They were about to go to a phase where they would attempt to surveil targets, establish a regimen of attack and acquire the resources necessary to effectuate the attacks."
"At that point it's entirely appropriate to take it down."
Anniversary of London attacks
Details of the plot -- first reported by the Daily News -- emerged on the one-year anniversary of the attacks on the London transportation system that killed 52 people. Officials said the timing of Friday's report in relation to the anniversary was coincidental.
New York's transportation system has emerged as a potential terrorist threat several times over the years. A June book by journalist Ron Suskind highlighted a reported plot by al-Qaida terrorists to kill thousands of New Yorkers by spreading cyanide gas in the subway. In May, a man was convicted of plotting to blow up a bustling subway station.
In 1993, the FBI rounded up more than a dozen men who allegedly conspired to blow up five New York City landmarks including the Lincoln and Holland tunnels. The prosecution resulted in more than a dozen convictions.
Internet chats
In the latest case, a federal official said FBI agents monitoring Internet chat rooms used by extremists learned of the plot in recent months and determined that tunnels were possibly being targeted after investigators pieced together code words from their conversations.
Another U.S. official, also speaking on condition of anonymity because the investigation is ongoing, called the plot "largely aspirational" and described the Internet conversations as mostly extremists discussing and conceptualizing the plot. The official said no money had been transferred, nor had other similar operational steps been taken.
Officials cited the arrest of the Lebanese suspect -- described as the scheme's mastermind -- as a significant break in the investigation. A Lebanese official said that the Beirut man confessed plotting to attack New York City tunnels later this year, and that he was acting on Osama bin Laden's orders.
Police arrested the man April 27, acting on information from the FBI. The 31-year-old suspect uses the alias Amir Andalousli, but his real name is Assem Hammoud.
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