This story has been updated.
Metro-North New Haven Line service is back on or close to schedule as of 4 p.m. Sunday after delays as long as an hour earlier in the afternoon.
The delays were due to earlier fire department activity in the vicinity of South Norwalk, Conn., Metro-North said in a 1:24 p.m. announcement.
Delays went from up to 60 minutes to about 25 to 30 minutes around 3 p.m., before returning to regular schedule.
Customers were advised to listen for announcements at local stations during the delays.