That means tighter security on rail lines everywhere. An alert to law enforcement officials in all 50 states has been sent out.
Mass transit has remained a target. It is the most vulnerable, according to Homeland Security officials and has been the focus of numerous terrorist plots in the U.S.
In 2007, several railroad spikes were removed from the tracks used by Metra's Electric and South Shore lines. Despite a $50,000 reward, the FBI has not found those responsible.
"It is still an active case. Fortunately, we haven't had any other circumstances like this since then, and we will continue to be very vigilant in surveying all of our property," said Judy Pardonnet, Metra spokesperson.
NEW YORK (WCBS 880/AP) — Sen. Charles Schumer is calling for better rail security now that the raid on Osama bin Laden’s compound has turned up plans to attack trains in the U.S.
“Anyone, even a member of al-Qaida could purchase a train ticket and board an Amtrak train without so much as a question asked,” Schumer said. “So that’s why I’m calling for the creation of an Amtrak no ride list. That would take the secure flight program and apply it to Amtrak trains.”