Woman, man hurt after two cars rammed

A female motorist was rushed to hospital with serious chest injuries after being hit by a car that had just rammed a police car in Otahuhu last night.

The man driving the car that hit hers suffered serious head injuries. Police said the car that hit the woman was not being pursued by police when the accident happened about 5pm.

It had sideswiped an unmarked police car in Atkinson Ave, then travelled about 100m before crashing into the woman's car.

The police car's involvement meant the Serious Crash Unit was called in to investigate but the car's role in the incident was unclear.