The police spokesman said the Serious Crash Unit had been advised.
A Fire and Emergency NZ spokeswoman said one person was trapped following the crash.
Emergency services attended two other crashes which ended in injuries overnight.
The police spokesman said police responded to a single-vehicle crash at 8.54pm on Swamp Rd, Puketapu.
Hato Hone St John spokeswoman said St John assessed and treated one person who was transported to Hawke’s Bay Hospital in a moderate condition
The police spokesman said police also responded to a single-vehicle crash about 10.05pm on Te Mata Peak Rd, Havelock North.
Hato Hone St John spokeswoman said St John assessed and treated three people in a minor condition at the scene.