KITCHENER -- A serious crash has closed a portion of a road near Conestogo Lake.

It happened on Friday afternoon near the intersection of Wellington Road 12 and Fourth Line in Mapleton.

An SUV collided with the back of a livestock truck, crumpling its front end.

Despite the a snow squall warning issued in Wellington County, Ornge air ambulance was called to transport at least one patient from the scene.

One person was airlifted to a trauma centre with life-threatening injuries. The driver of the livestock truck was not injured.

Police say that visibility was poor at the time of the crash.

It's not yet clear whether there was any livestock on the truck.

This is a developing story. More to come…