Updated at 6:47 a.m.

Trains are no longer sharing a track on Metro’s Red Line. But officials with the transit system warn that delays remain after an earlier problem with a track outside the Medical Center stop.

Updated at 6:28 a.m.

There is now an additional hiccup on Metro’s Red Line, and trains are sharing a track in two spots. Trains are sharing a track between the Medical Center and Grosvenor stops and between the Shady Grove and Twinbrook stops.

There is a track problem outside the Medical Center stop. And there was ongoing issues from crews doing work on switches.

Riders should expect delays and crowds, Metro warned.

Original post at 5:30 a.m.

Riders on Metro’s Red Line should expect delays Monday morning.

Trains are sharing a track between the Grosvenor and Shady Grove stops. There was work being done over the weekend on switches on that portion of the track, and it was late in getting it done before the transit system opened.

Riders should expect delays and crowding, according to Metro. It is not clear how long the delays will last.

Metro also said that the severe heat caused crews to be delayed in doing the repair work. Crews were doing safety testing Monday morning, Metro said.

This comes as Metro is doing work on part of the Red Line between the Shady Grove and Twinbrook stops. Trains are sharing a track in that portion. The work is part of Metro’s SafeTrack program to do major repairs on the system.