One person has died in a crash on State Highway 2 at Pikowai.

The road is expected to be closed for some time as police carry out a serious crash investigation.

Police were called to the crash, involving a truck, about 7.15am. SH2 is closed between Otamarakau Valley Rd and Hauone Rd.

Diversions are in place and motorists are asked to avoid the area.

St John said two people were also treated for minor injuries with one taken to Tauranga Hospital.