Police can confirm the vehicles involved in the fatal crash on a private forestry road in Kaingaroa Forest today were a logging truck and a van.

Emergency Services were called to the crash on Bonisch Road at about 6.40am.

"Four people travelling in the van died at the scene. A fifth person from the vehicle received moderate injuries," says Bay of Plenty Road Policing Manager Inspector Brent Crowe.

"The truck driver was uninjured but shaken.

"Enquiries are ongoing to identify the deceased and determine the circumstances that resulted in the crash."

People with information about the crash can contact their nearest police station.

Alternatively, information can be left anonymously via the Crimestoppers 0800 555 111 line or non-emergency information can be given to the police's 105 number.