MARTA service returned to normal just in time for the late afternoon rush Tuesday after a fire at Five Points disrupted it earlier in the day.

The fire started from a “mechanical problem of unknown origin,” said transit authority spokesman Lyle Harris. No passenger injuries were reported, but for a couple of hours the northbound and southbound red and gold lines ran on a single track.

MARTA rider Amy Chown, vice president of marketing for The Atlanta Journal-Constitution, said she felt like she was in the middle of a “crazy adventure,” shortly after the incident.

The fire was one of two incidents Tuesday on MARTA’s rail system. The agency had to take a train out of service after a problem with a door on one of the cars at the Inman Park station.