Emergency services responded to a serious crash involving a truck on State Highway 1 in North Canterbury on Monday.
A police spokesperson said the crash on Greta Rd, Greta Valley, between Omihi Rd and Motunau Beach Rd, was reported about 3.45pm.
"Initial indications are there are injuries."
Waka Kotahi NZTA said Greta Rd is currently blocked near Scargill Valley Rd.
It advised motorists to delay their journey or avoid the route until the crash has been cleared.
