A man is in a serious condition after being hit by a truck in Matakana this morning.

Police said they were alerted to the incident on Laly Haddon Place just after 11am, when a pedestrian was hit by a concrete truck.

A man aged in his 40s is said to be in a serious condition and has been flown to Auckland Hospital by the Westpac Rescue Helicopter.

The Serious Crash Unit is investigating.