EDMONTON -- Officials with CN Rail are working to determine the cause of a train derailment in Fraser-Fort George, British Columbia, Thursday morning.

An estimated 26 railcars derailed at approximately 5 a.m. on Dec. 26 about 30 kilometres east of Mount Robson, said CN Rail.

One user on Twitter captured photos of the derailment, showing multiple railcars on their sides.

No one was injured and none of the railcars were carrying dangerous goods, according to a statement from CN Rail.

One or two cars slid into Moose Lake, and CN's environmental experts are on scene assessing possible impacts to the environment.

Emergency responders remain on scene.

The cause of the derailment is under investigation.