WASHINGTON — An investigator today said the subway train that plowed into another, causing a fatal crash in the nation's capital, was part of an aging fleet that federal regulators had recommended three years ago be phased out or retrofitted.

Debbie Hersman of the National Transportation Safety Board said today the Metrorail transit system "was not able to do what we asked them to do."

Federal investigators this morning also revised the death toll from nine to seven.