On Twitter, Amtrak issued a service advisory just after 5:30 a.m., saying trains between Penn Station and Philadelphia were stopped due to an ongoing signal power outage.
About two hours later, Amtrak said service had resumed with significant delays.
Just before 6:30 a.m., NJ Transit reported delays with its Northeast Corridor eastbound rail service of up to 45 minutes due to an earlier Amtrak overhead wire issue near Trenton.
As of 8:30 a.m., trains in and out of Penn Station were experiencing delays of up to 20 minutes.
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