Police are currently at the scene of a serious crash on Dairy Flat Highway, Auckland.

The incident, which occurred around 11.23 am, involved a collision between a truck and a cyclist.

Regrettably, the cyclist has sustained critical injuries and is currently being transported to the hospital for urgent medical attention.

In light of the ongoing investigation, Dairy Flat Highway has been closed in both directions.

Motorists are strongly advised to seek alternative routes to avoid delays.

The Serious Crash Unit has been notified and is expected to conduct a thorough examination of the scene to determine the circumstances surrounding the incident.