UPDATE 10.41AM: Up to 10 people have been injured, two seriously, in a crash on State Highway 5.

Emergency services, including rescue helicopters, have now arrived at this crash site, says a police spokesperson.

"Initial indications are two people have serious injuries and a further eight have more moderate injuries.

"The road is blocked. We continue to ask motorists to avoid the area."

EARLIER:

Emergency services are responding to a two-vehicle collison on SH5, Tarawera, between Tataraakina Road and Pohukura Road.

The crash, involving a van and a truck, was reported to Police at 9.52am, says a police spokesperson.

"Initial indications are that there are injuries.

"Motorists are asked to avoid the area or expect delays."