Riders on three Metro lines were delayed for a short time Tuesday morning after smoke was seen in a tunnel.
The smoke was reported in a tunnel between the Benning Road and Stadium-Armory stations, the D.C. fire department said on Twitter.
Train service on the Blue Line was suspended for about 20 minutes between Stadium-Armory and Addison Road. Silver Line trains were also limited to the Wiehle-Reston East and Stadium-Armory stations.
Orange Line were also warned of delays because of congestion.
Service has since been restored, but trains on the Blue and Silver lines are sharing a track between Stadium-Armory and Addison Road.
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