One critical, one serious after Southland crash

Police say two people are seriously injured after a crash near Nightcaps in Southland this afternoon.

The two-vehicle collision occurred on Nightcaps Opio Road, Opio, about 3pm.

"Initial reports suggest one person is in a critical condition and another person is in a serious condition," a police spokesperson said shortly after the incident.

A St John spokeswoman later said two ambulances, two helicopters, one rapid response vehicle, one manager and a first response unit responded.

She said one person was airlifted to Dunedin Hospital in a critical condition, and one was taken to Southland Hospital in a serious condition. 

The road was closed and diversions were in place. Motorists were advised to avoid the area and expect delays.