UPDATED 1.12PM: One person has died after a crash on the Kopu-Hikuai Road around midday today.
A truck went off the road and down a bank about 3km from Kopu.
The driver and sole occupant was pronounced dead at the scene, says a police spokesperson.
The road will be closed for a number of hours while the Serious Crash Unit attends.
"This will affect school traffic.
"Motorists are advised not to enter the Kopu-Hikuai Road from Kopu."
Police is also aware that a number of people would have seen the crash or come across it shortly afterwards, and then have left the scene.
"We would appeal for anyone who saw what happened and has not yet spoken to Police to come forward."
They can either speak with their local police or phone Hamilton Police Station on (07) 858 6200.
One person has died after a truck crash in the Coromandel.
The truck was travelling along State Highway 25A when it went down a bank, about 3km from Kopu.
The NZTA says the highway is closed between SH26 in Kopu and SH25 in Hikuai,
"Motorists are advised to expect delays and the follow the directions of emergency services."
SH25A KOPU TO HIKUAI - ROAD CLOSED - 12:30PM
Due to a serious crash #SH25A is NOW CLOSED between Kopu & Hikuai. Please delay your journey or allow extra time for long detours, including Stop/Go on #SH2 Karangahake Gorge: https://t.co/Afl77Ppgps ^TP pic.twitter.com/cnljsKaoWh— NZTA Waikato/BoP (@NZTAWaiBoP) December 2, 2018
The diversions are as follows:
Eastbound Traffic: From SH26 continue south towards SH2 (Paeroa), follow SH2 to SH25 (Waihi) back to Hikuai. Westbound Traffic: From SH25 head south to Waihi, continue on SH2 to Paeroa and then north on SH26 to Kopu. Please note that there is a stop / go in place in the Karangahake Gorge due to an earlier slip. Expect delays through this area also.