A three-car crash on Auckland's southern motorway has led to traffic chaos in and around the city this afternoon.

Emergency services are at the site near the Market Road turn-off.

At least three lanes were blocked following the accident, which occurred just before 1pm.

Police said just before 2pm three vehicles were involved in the crash, which happened about 100m south of the Market Road off-ramp.

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"At this point, no injuries are reported and emergency services are attending the scene,'' police said.

The NZ Transport Agency said traffic had been backing up quickly in the area.

NZTA said about 2pm that all lanes in the area were now open. However, motorists were being encouraged to avoid the area, as there were huge delays.

"Expect delays from the Harbour Bridge,'' NZTA said.