10 a.m. update:
The collision scene has been cleared as of 9:05 a.m. Jan. 4, according to the MTO. No further information about the collision is currently available.
Original information:
A collision has closed Highway 17 in the Massey area, the MTO reports.
The closure, first reported at 2:14 a.m. Jan. 4, is between Birch Lake Road and Third Street.
You can view a map of the closure online here, through the MTO's 511 Ontario Traveller Information site.