Updated Aug. 13 at 6:25 p.m.
The highway has been fully reopened, the MTO reports.
Original story:
A collision has closed Highway 522 south of Sudbury in both directions, according to a tweet from the MTO early Saturday afternoon.
The MTO tweeted that the highway is closed between the intersection with Highway 69 (near Grundy Lake Provincial Park) and East Road-North Road (at Loring).
No further details are currently available.