Update: The roadway was reopened around 1 a.m. on Tuesday following an earlier crash at Highway 12 and Creighton Street.
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A head-on crash, which may have included up to five cars, has shut down Atherley Road in Orillia.
It appears a vehicle driving toward Rama crossed the centre line, just past the Barnfield Point Recreation Centre, and slammed into an oncoming vehicle at around 5:30 p.m., Monday. Other vehicles were also involved.
At least one person had to be extracted by firefighters, who were joined on the scene by paramedics and Orillia OPP officers.
Witnesses say an air ambulance was required to take at least one patient to hospital. However, few other details are certain and the Orillia OPP has yet to provide an update.
Police are asking people to avoid the area; both sides of Atherley Road are closed and the road is expected to be closed for some time while the investigation unfolds.