Service on the Long Island Rail Road was disrupted for almost a half-hour during the Wednesday morning commute because of Amtrak signal trouble in one of the East River tunnels, the railroad said.

The railroad issued a service alert about the disruptions at 7:30 a.m. and said shortly before 8 a.m. that service was returning to normal. Trains were on or close to schedule by about 9:30 a.m.

At least four westbound trains were terminated at Jamaica and one train was diverted to Atlantic Terminal in Brooklyn, the LIRR said on its website.

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

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