State Highway 27 is closed after a crash involving two trucks and a cow near Matamata.
Police were called to the crash just north of Walton Rd about 4.30am.
A spokeswoman said two trucks had crashed after one hit a cow, killing it.
One truck driver had minor to moderate injuries.
Waka Kotahi NZ Transport Agency advised that the highway was closed between Wardville Rd, Waharoa and Diagonal Rd, Ngarua.