Crews are emptying one of five freight cars that is carrying liquid butane after they derailed in Edmundston, N.B., a municipal official said Monday.
City general manager Marc Michaud said firefighters and special work crews from CN are at the scene of the derailment in the community of Saint-Basile.
Michaud said there was no leak nor fire and no one was injured.
He said while about 25 residents who live within a 250-metre radius of the derailment were placed on alert, none of them were told to leave their homes.
"Everything is under control," he said.
It's not known what caused the cars to leave the tracks, he added.
CN spokesman Mark Hallman said the cars from the eastbound train left the tracks Sunday around 10:30 p.m. In addition to the butane, three cars were carrying automobiles and another was transporting clay, Hallman said.
He said an investigation into the cause of the derailment was underway.
The derailment is the second in the province this month.
On Jan. 7, a CN freight train hauling crude oil and liquefied petroleum gas derailed near Plaster Rock, sparking a fire that burned for several days. In all, 19 cars and a locomotive left the tracks.