The vehicle that allegedly fled police and ended up in a serious crash on Yaldhurst Road was driving a suspected drug mule from the airport.
NZME. News Service understands that the police were acting on information that the 32-year old female passenger had allegedly smuggled drugs through Christchurch International Airport.
Sources say police saw the woman being picked up at the airport by the silver BMW.
Officers tailing the car began a pursuit at about 4.45pm after it allegedly backed into another vehicle at the junction of Wairakei Rd and Johns Rd, just outside the airport.
The vehicle fled police before ramming through an armed police roadblock on Yaldhurst Road and colliding head-on with another car, causing injuries to the occupants.