A section of Highway 11 northbound in Gravenhurst remains partially closed following an early morning tractor-trailer fire.

Emergency crews responded shortly after 3 a.m. Monday to reports of a transport truck fully engulfed in flames north of Doe Lake Road. The incident prompted lane closures as firefighters worked to extinguish the blaze and crews began cleanup operations.

One northbound lane has since reopened, while the remaining closure continues to affect traffic in the area.

Police reported no injuries and said the investigation into the fire is ongoing. The cause has not yet been determined.