A Spanish newspaper reports that a suspect in last year's Madrid train bombings had detailed plans of a major New York City railway station.

The El Mundo newspaper says a sketch and technical information about New York's Grand Central Station were found on a computer disk seized from the home of suspect Mouhannad Almallah. Spanish authorities arrested Mr. Almallah on March 24, 2004, nearly two weeks after the train blasts that killed 191 people.

News reports say he was released after questioning but remains a suspect. El Mundo says Spanish police did not warn U.S. officials of the possible threat to Grand Central Station until December, after they understood the scope of the technical information.

Some information for this report provided by AP and Reuters.