Volunteers - including a local rugby team - had met police this morning to resume the search.
Between 40 and 50 volunteers plus Land Search and Rescue staff and air support resumed searching this morning, police said.
A small dog named Bro which Axle had been playing with when he went missing from the Paroa Rd property returned alone yesterday afternoon, sparking fears for the little boy's safety.
The dog's owner, Damon Jeffrey, had earlier posted on social media that the white fluffy dog came home about 4pm - three hours after he disappeared with the boy.
Jeffrey said his dog always responded to his call - but this time despite him yelling and whistling for hours he did not.
"There's no way he couldn't hear me calling him. The only reason he wouldn't have come straight back is if something was wrong. And to come back alone really worries me."
They tried to take the dog back out in the hope he would lead them to the boy, but too many searchers were around so the dog became excited and didn't help, he posted.
Police are urgently appealing for anyone with information about the young boy's whereabouts to come forward.
Police carried out a large-scale search for him after he was reported missing at 3pm yesterday, which was called off at 11pm.
Emergency responders including the Eagle helicopter and police dogs, as well as more than 100 volunteers, have been involved in the search.
Axle was last seen wearing a blue shirt with palm trees on it and blue gumboots with sharks on them.
It is understood his parents started looking for him about 1pm when neither of them could find him.