Milwaukee West trains had been stopped in both directions after someone was hit by a train in Hanover Park around 6:40 a.m.
A pedestrian was struck by a train just east of the station. The inbound train from Elgin, #2208, was due downtown at 7:20 a.m.
The person was reportedly killed, although Metra spokesman Tom Miller was unable to confirm that Monday morning.
Three inbound trains behind the train involved in the incident were delayed, Miller said.
The delays were expected to extend later into the morning rush period.
Train #2220, scheduled to arrive in Chicago at 8:23 a.m., was stopped near Roselle. Train #2218, scheduled to arrive in Chicago at 8:18 a.m., was on the move as of 7:47 a.m., operating approximately 25 to 30 minutes behind. Train #2203, scheduled to arrive in Elgin at 7:38 a.m., remained stopped near Roselle as of 7:45 a.m., operating 30 minutes late. Train #2216, scheduled to arrive in Chicago at 7:48 a.m., was operating approximately 27 to 32 minutes behind schedule as of 7:40 a.m. Train #2212, scheduled to arrive in Chicago at 7:53 a.m., was operating approximately 40 to 46 minutes behind schedule as of 7:35 a.m.
Train #2210, scheduled to arrive in Chicago at 7:36 a.m., was moving as of 7:30 a.m. and operating approximately 50 minutes late. It picked up commuters from train #2208 and made an additional stop at River Grove. The train then expressed into Chicago.
North Central Service trains assisted with picking up commuters on the Milwaukee West Line from River Grove into Chicago.
The Sun-Times Media Wire contributed to this report.