A four-car crash is causing delays on a busy part of Auckland's motorway network early this morning.
Emergency services are at the scene of a multiple-car collision on State Highway 20, southwestern motorway, under the Hillsborough Rd bridge.
The NZ Transport Agency issued an alert just after 6am warning motorists to expect delays in the area.
"A crash is blocking the right lane, southbound, at Hillsborough Rd interchange. Pass with care and expect delays until cleared."