Emergency services have been called to a serious two-car crash involving many people in Canterbury, police say.
In a statement, police said the crash happened in Main South Rd (State Highway 1), in Selwyn District, about 9.30am today.
One of the vehicles crashed into a tree.
"There are multiple people involved and initial indications are there are serious injuries."
The northbound lane is blocked, and traffic management is being put in place at the scene.
