10:05 A.M. Update:
Metro reports that there are no longer delays on the Orange and Blue lines, following reports of a sick customer at Potomac Avenue Station.
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9:13 A.M. Update:
Trains are returning to normal operations, but delays continue, Metro says.
9 A.M. Update:
Metro reports delays in both directions on the Orange and Blue lines due to a sick customer aboard a train at Potomac Avenue. Trains are single-tracking between Eastern Market and Stadium-Armory.
6:35 A.M. Update:
The Red Line delays continue in both directions. The earlier train malfunction at Twinbrook has been resolved, according to Metro.
There are Red Line delays in both directions due to a train malfunction at Twinbrook. Trains are sharing the same track between the Grosvenor and Twinbrook stations.