The OPP says it expects that the 10-year old boy hurt in Thursday's deadly 5-vehicle crash in Georgina will be released from hospital on Friday.
An air ambulance took the child to Sick Kids Hospital with serious injuries.
The crash killed 2 men and left 2 others with seriously hurt.
Police say vehicles were stopped stopped by flagmen near a construction zone when they were hit from behind by northbound traffic.
Investigators are looking into what went wrong.