A member of the public was also hit by a vehicle after police performed a routine traffic stop at around 10.30am on Reynella Drive in Massey.

The offender has fled the scene in a vehicle and police say they have a large presence actively searching for the offender.

St John Ambulance says three patients have been taken from the scene to hospital, and on of them is in a critical condition.

One other person is in a serious condition and one has moderate injuries.

A spokesperson said all three patients have been taken to the same hospital and would not comment whether the person in a critical condition was a police officer.

Source: rnz.co.nz and video 1 News Republished by arrangement.

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