5:47 p.m. Update: Metro says power has been restored and trains are no longer single-tracking. Delays continue.

5:40 p.m. Update: The news just keeps getting worse on the Green Line. Metro now says there is a power problem at Prince George’s Plaza. Trains are single-tracking between College Park and Fort Totten.

5:35 p.m. Update: Green Line riders should expect delays along the line and crowding on the platform, Metro officials said.

5:15 p.m. Update: Metro says trains are resuming normal operations, but “the Green Line is experiencing significant delays” due to both incidents.

5:10 p.m. Update: Riders should expect delays Friday evening on the Green Line due to a report of an unauthorized person on the tracks between West Hyattsville and Fort Totten.

Metro spokesman Dan Stessel said power was shut down at 4:20 p.m. to allow Metro Transit Police to search for the individual. Service was temporarily suspended between Fort Totten and Prince George’s Plaza. Stessel said trains were also being turned back at “strategic locations” so that service could continue, but that delays are expected.

Stessel said power was turned back on, but it was not yet clear whether police had apprehended the person.

5:07 p.m Update: Metro says power is being restored and train service between Fort Totten and Prince George’s Plaza should resume soon. However, a new issue has arisen — a medical emergency at Navy Yard. Trains are single-tracking between Waterfront and Anacostia.

— Michael D. Bolden

Original post: Metro has suspended rail service between West Hyattsville and Fort Totten on the Green Line while Metro Transit Police search for an unauthorized person on the tracks.

According to a tweet from Metro, “Green Line trains are turning back in strategic locations to maintain service elsewhere on the line.”

— Michael D. Bolden