A power outage is causing delays for some train commuters this morning.
Auckland Transport tweeted a warning to travellers just after 8.10am.
"Expect delays & cancellations on the Eastern, Onehunga & Southern lines due to an overhead line problem between Westfield and Wiri."
The council-controlled organisation's spokesman Mark Hannan said delays were caused by a four-minute power cut that occurred at 7.32am.
Some ferry services are also disrupted this morning.