State Highway 1 has reopened after a serious crash this morning that saw one person critically injured in Tokoroa.
The highway was closed for almost seven hours while emergency services investigated.
The two-vehicle crash happened about 6.05am between East Parkdale St and Main Rd, a police spokeswoman said.
A St John spokesman said one person had been flown with critical injuries to Waikato Hospital.
Two ambulances and a helicopter went to the scene.
The road was closed and diversions were in place for a time.
A New Zealand Transport Agency tweet said the road reopened about 12.35pm.