Emergency services are attending a serious crash in the Timaru District.
The two-vehicle crash happened at the intersection of Rangitata-Orari Bridge Highway and Orari-Rangitata Highway (SH 79 and SH 1) shortly before 9:30am.
Two people in one of the vehicles were trapped for a time, and are in critical condition.
A helicopter was called to transport the pair to hospital.
The road is blocked, and diversions are in place around the scene.
The Serious Crash Unit has been advised.
Issued by the Police Media Centre