UPDATE: OPP say three people killed in Guelph area crash

Provincial police say two more people involved in a collision near Guelph have died, bringing the number of dead to three.

They say the crash occurred near the community of Rockwood, east of Guelph, around 8:30 p.m. on Saturday.  

Investigators say a passenger in one of the vehicles died at the scene, while the driver of the vehicle and another passenger were critically injured.  

But on Sunday morning, Sgt. Kerry Schmidt tweeted that the crash was now a triple-fatality.

They say the driver of the second vehicle wasn't hurt.  

No other information about the accident was immediately released