Crashes on two state highways have left one person critically injured and blocked lanes, causing delays.
State Highway 2 in the Tararua District was blocked this evening due to a collision between two cars near Henderson Road about 5.20pm.
Police said one person was critically injured and a helicopter was on its way.
Diversions were in place but motorists were asked to delay travel or avoid the area if possible.
On State Highway 1 on the Waikato Expressway, one northbound lane was also closed after two cars crashed about 5.15 near Whangamarino Road.
One vehicle was stuck in a median barrier.
No one was injured in the crash, but motorists were warned to expect delays.