Several BNSF Metra line trains scheduled to run on Christmas Eve were canceled mid-day due to an “operational incident,” Metra announced.

A staffing shortage resulted in the need to cancel some service on Christmas Eve, a Metra spokesperson told NBC Chicago.

Around 3:13 p.m., Metra BNSF posted about the cancelation on social media.

The trains that will not operate are the inbound 2026, 2028 and 2036. Canceled outbound trains are 2029, 2037 and 2041.

In addition to the cancellation, Metra is operating on a reduced schedule on December 24.

Metra is warning of crowding potential on inbound trains, with the worst on No. 2034 scheduled to leave Aurora at 8:05 p.m.

Here’s a closer look at the trains that were canceled:

Inbound:

  • No. 2026 — Scheduled to depart Aurora at 4:05 p.m. and arrive at Chicago Union Station at 5:20 p.m.
  • No. 2028 — Scheduled to depart Aurora at 5:05 p.m. and arrive at Chicago Union Station at 6:20 p.m.
  • No. 2036 — Scheduled to depart Aurora at 9:05 p.m. and arrive at Chicago Union Station at 10:20 p.m.

Outbound:

  • No. 2029 — Scheduled to depart Chicago Union Station at 7:33 p.m. and arrive at Aurora at 8:51 p.m.
  • No. 2041 — Scheduled to depart Chicago Union Station at 10:30 p.m. and arrive at Aurora at 11:26 p.m.
  • No. 2037 — Scheduled to depart Chicago Union Station at 11:33 p.m. and arrive at Aurora at 11:51 p.m.

Train schedule information can be found here.

No additional information was immediately available.