Smoke was reported between the Rosslyn and Foggy Bottom Metro stations Saturday night.

The smoke was reported at about 8:30 p.m. on the inbound track from Rosslyn, the Washington Post reported.

A Metro spokesman told the Post that there were no trains in the tunnel at the time and no injuries were reported, but the incident did cause single tracking and delays of five to 10 minutes. The incident may have been a maintenance problem.

More than five emergency vehicles were outside the station after the incident was reported, but firefighters did not go into the tunnel, the Post reported.