One person has been flown to Auckland Hospital with life-threatening injuries after a crash in Whangārei.

Police were called to the crash between a van and a car on Hatea Drive just before 11pm, a police spokeswoman said.

Two other people suffered moderate injuries, she said. Both lanes were blocked by the crash.

The third person was initially reported as being in a serious condition but their injuries were later upgraded to critical, she said.