UPDATE: Niagara-bound QEW re-opened after fatal crash, overnight closure

Niagara-bound lanes of the QEW have been re-opened at Guelph Line after a deadly collision.

OPP say two vehicles collided and one of them rolled over at about 9:30 p.m. Wednesday, killing a 61-year-old woman.

The highway was cleared shortly after 4 a.m. Thursday.

Speed is considered to be a possible factor in the crash.

with files from Tiffany Hendsbee