Police are investigating a crash on Highway 400 in the northbound lanes just north of Mapleview Drive in Barrie on Tuesday afternoon.
At around 2 p.m., OPP officers responded to the scene of a single-vehicle rollover involving a pickup truck with a trailer.
As the investigation is in its early stages, police would not say whether there were any injuries or if charges might be laid.
Traffic delays are likely, however, with police noting cleaning up the area will take some time.
BarrieToday will provide more information as it becomes available.