Blue Line service is back to normal after shuttle buses were replacing trains due to a wire issue, the MBTA said Wednesday night.
The disruption took place between the Wonderland and Revere Beach stops "due to an overhead wire problem near Wonderland," the MBTA said earlier Wednesday.
Around 8:45 p.m., the MBTA said train service had resumed.
A day earlier, all MBTA trains briefly stopped because of a power issue during the Tuesday morning commute.
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No further details were immediately available about Wednesday's incident.