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Federal Investigators Say They're Months Away From Knowing Cause Of Amtrak Derailment

PHILADELPHIA (AP) -- Federal investigators say they're months away from determining the probable cause of a deadly Amtrak train derailment last week in Philadelphia.

The National Transportation Safety Board says any other reports on the crash that killed 8 people and injured dozens are "pure speculation."

Investigators have said the train was traveling over 100 mph just before it entered a curve where the speed limit is 50 mph.

The FBI has been called in to investigate whether the locomotive's windshield was hit by an object before the derailment.

Amtrak resumed service Monday between Philadelphia and New York City.

Four passengers and a train conductor sued Amtrak over the crash Monday. The railroad has said it doesn't comment on pending litigation.

(© Copyright 2015 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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