A car stolen at knifepoint from a woman in Christchurch has been found and police say they are now talking to four people about what happened.

The car-jacking happened in Sydenham at 7am on Saturday.

The victim's father had issued a plea for the public to keep an eye out for the vehicle because his daughter needs a car to get to her workplace each day.

Her father Bruce, who didn't want his last name used, said his daughter is very shaken up after the attack at the intersection of Huxley Street and Burlington Street, in Sydenham.