Photo: The Canadian Press - Darryl Dyck

Canadian Pacific Rail locomotives are seen in this 2012 file photo.

Officials with the Transportation Safety Board are investigating a CP Rail derailment near Banff.

The railway says over a dozen cars carrying grains and cement went off the track west of the town early this morning.

CP spokesman Jeremy Berry says there were no hazardous materials involved and no one was injured.

Berry says it impacted a small low-level railway bridge.

He says CP is working with Parks Canada to deal with any environmental matters.

He also says there's no word yet on when the line will be running again.