NJ Transit says a problem with a dock bridge over the Passaic River at the end of Penn Station in Newark is causing the problem.
PATH service has been restored from Newark's Penn Station to Journal Square in Jersey City with 10 minute delays.
The Port Authority says a problem with an Amtrak dock bridge caused the service to be totally suspended earlier in the morning.
Service was fully restored by 8 a.m.
NJ Transit is still cross-honoring PATH riders from Newark to New York and buses are running express routes from Market Street in Newark to Penn Station and Journal Square.