KEY POINTS:
Police are at the scene of two car accidents in Wellington.
A car has rolled in the southbound lane on State Highway Two near the Silverstream Bridge.
Inspector Andy Dow said one lane is blocked and traffic is backing up.
Meanwhile, two cars have also crashed on Grays Rd, State Highway One, at Plimmerton.
Inspector Steve Darroch said one person was trapped in the car but they have now been freed.
He said one of the drivers has head injuries.
- NZHERALD STAFF