WASHINGTON - A preliminary report released by the National Transportation Safety Board says last month's deadly Metro-North derailment caused millions of dollars in damage.

The derailment, which killed four people and injured dozens, caused more than $9 million in damages when the train came off the tracks in the Bronx. The report also confirms the train, on Metro-North's Hudson line, was going 82 mph in a 30 mph zone when it derailed.

The report found nothing wrong the signal system, train brakes, mechanical equipment, or the track itself.

On-scene work in the Bronx has ended and the NTSB is continuing its investigation at its headquarters in Washington, D.C.