Mr Clifford said extra police have been in the Wairoa and Raupunga areas throughout the week. "Now, we are moving into what we could call the reassurance phase," he said.
It has been stepped up over the weekend, with a large number of visitors in town for the tangi, and a plan is in place for extra officers from throughout the Gisborne and Hawke's Bay police areas to be in the town over the next few days.
"I guess we could say we're moving into the reassurance phase," he said.
"We are aware there are people in the community who are concerned, but also we do have to be mindful of not adding to the fear by an over-visible presence."
The tangi for the two other victims, Ronald Rigby and TerryShane Stone, will both be held in Wairoa today, at different venues but each starting at 11am.
Meanwhile, the blue car that might have been involved in the crash is still under forensic examination in Gisborne.
Inquiry head Detective Senior Sergeant Brent Greville said a forensic examination would help determine whether it played a part in the crash.
The blue Honda Prelude was found on the side of a road in Raupunga on Thursday afternoon.