NEW YORK - Federal investigators are working today to determine what caused a high-speed commuter ferry to crash into a lower Manhattan dock yesterday morning.

Officials say the Seastreak Wall Street had recently undergone a major overhaul that gave it new engines and a new propulsion system. But officials said it was too soon to tell whether they played any role in the morning rush hour incident that left 11 people seriously injured.

The captain and crew members underwent drug tests immediately following the crash as a standard procedure.

The catamaran Seastreak Wall Street had slowed following a trip across New York Bay when the impact took place. The vessel departed from Conners Highlands with 326 passengers aboard.