3.35pm Update: Police are at the scene of a serious crash on State Highway 29A, near Baypark, Te Maunga.

"Emergency services were alerted to the multi vehicle crash at around 3pm," says a Police spokesperson.

"An update on injuries will be provided when able."

SH29A between Te Maunga and Maungatapu is closed and there are significant traffic delays.

Motorists travelling from Mount Manganui are being diverted.

NZTA advise that due to the crash, SH29A is closed between SH2 Baypark and Taipari St, Westbound.

A SunLive reader who lives nearby has phoned in to report on an update on the crash scene and situation.

"Traffic from Maungatapu is being turned around and sent back to Maungatapu," says the SunLive reader.

"The traffic can't get through the Te Maunga roundabout. That traffic is being directed either back towards Te Puke or down towards the Mount along Maunganui Road.

"The ambulances and fire trucks have all gone. There are still Police cars there, and the two vehicles involved in the accident are still in place. The other vehicle involved in the nose-to-tail is blocking one lane of the route from Maungatapyu to Te Mainga.

"Before they open the road they will need to shift three vehicles," says the SunLive reader.

"A lot of Police are looking at the two damaged vehicles."

"Please follow directions of emergency services and allow extra time for your journey," says an NZTA spokesperson..

Earlier, 3.05pm: There has been a serious crash on State Highway 29A near Baypark.

Emergency services are responding to the crash on SH29A between Truman Lane and the Maungatapu Road onramp.

Police were advised of the crash at 3pm.

It is unknown at this stage whether there are any injuries.

Police report that two lanes west and one lane east are blocked on SH29A.

Motorists are advised to avoid SH29A between Maungatapu and Te Maunga and significant delays in traffic are expected.

At the scene? Phone 0800SUNLIVE or email newsroom@thesun.co.nz.