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.
SH1 TOKOROA - ROAD CLOSED - 6:30AM Due to a serious crash a short section of #SH1 is now CLOSED just north of Tokoroa. Please allow extra time for a detour this morning: https://t.co/vM9bvXVcIM ^TP pic.twitter.com/LEoJZRCC1K
— Waka Kotahi NZTA Waikato/BoP (@WakaKotahiWaiBP) March 31, 2020