UPDATED 10.10AM: Police are investigating the cause of a two car crash on State Highway 29a.

Emergency services were called to the crash around 9am.

A police spokesperson says it was on the highway, between Maungatapu Road and the Taipari Street Off-Ramp.

'Appears there was one patient.

'The westbound lane was blocked but both vehicles have now been cleared.”

EARLIER:

Reports are coming in of a crash on State Highway 29, near Maungatapu.

A caller to the 0800 SUNLIVE news hotline says the crash is just past the Maungatapu Bridge on SH29a.

Emergency services have been called to the scene.

According to Google Live Traffic reporting, traffic is at a standstill on both Turret Road and State Highway 29a.

Image: Google Maps.

SunLive is working on getting more information and will update this story as soon as we have something more.

At the scene?

Call 0800 SUNLIVE or email photos to newsroom@thesun.co.nz