The horror week on New Zealand's roads has continued - with three people dying in separate crashes overnight.

Two people died - and another suffered critical injuries - in a crash at Nuhaka, east of Wairoa, on Friday night.

Emergency services were notified to the crash just after 8pm.

The critically injured person was airlifted to hospital.

Police confirmed this morning that one person has died after a crash in the Manawatu at about 1am.

Two cars - which were carrying six people - collided on Rongotea Rd.

As well as the deceased, one person suffered serious injuries, and four suffered minor injuries. The serious crash unit is investigating.