Emergency services were called to a serious crash involving six vehicles at Highway 6 in Glanbrook this afternoon.
The crash happened the intersection of Highway 6 at Chippewa Road. When crews arrived they found one person trapped in one of the vehicles and one car was on its roof.
A spokesperson from Hamilton Fire said one person needed to be freed from their vehicle.
A total of four people were taken to hospital but all are expected to be okay.
OPP are investigating and at this time the lanes remain blocked.