Two people have been injured in a crash on State Highway One between Timaru and Pareora.
Emergency services were called to the two-vehicle crash, north of the Paerora River, at about 5.45am on Friday.
A police spokesperson said one person is reported to be in a serious condition and a second person has moderate injuries.
The road was closed but reopened at about 10am.
A police spokesperson said inquiries into the crash are ongoing.