Severe delays are being reported on the Green Line due to a problem with an overhead wire.
The problem - involving an overhead wire near Fenway Station - has led to the suspension of Green Line service between Kenmore and Reservoir stations on the D branch.
Green Line customers are being encouraged to take the C branch trains to Cleveland Circle. From there, it's a short walk to Reservoir Station, where customers can board outbound trains on the D branch.
Limited bus service will also be offered between Kenmore and Reservoir stations.
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MBTA personnel are working to fix the problem.
Moderate delays are also now being reported on the Green Line C branch due to a disabled train at Hawes Street.