One person has died in a crash near Whangarei overnight.

The single vehicle crash happened at the intersection of State Highway 1 and Brooks Rd in Waipu, Northland.

Emergency services were called to the scene shortly after 3.30am, police said.

One person was already dead when paramedics arrived, a St John Ambulance spokesman said.

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It was believed only one person was in the car at the time of the crash, he said.

The Serious Crash Unit is investigating.

The road was open this morning with a stop-go system in place. Motorists are asked to slow down while travelling through the area.