Updated at 8:32 a.m.

Normal service is back on the Green and Yellow lines at the Mt. Vernon Square station after an earlier incident that involved a train malfunction.

Original post at 8:14 a.m.

Riders on the Green and Yellow lines should expect delays Tuesday morning on Metro.

The problem is due to an earlier train malfunction at the Archives station.

There were earlier issues on Metro’s Red Line in the direction of the Shady Grove stop. The problem was due to an earlier signal malfunction outside Dupont Circle.

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