Suspicious behaviour at a coastal holiday home has led to the discovery of a methamphetamine lab in Northland.

The family of Sonny Rawhiti Kemp, who died after the ambulance he was being taken to hospital in crashed, are making their way to the Far North to prepare for his tangi.

Sonny Rawhiti Kemp, 66, was on his way to hospital when the ambulance smashed into a power pole.

A St John paramedic involved in an ambulance crash in Northland this morning is now in a stable condition in hospital.

Searchers have found the body of a four-year-old boy who went missing in Northland last night. A diver found the boy in a pool beneath a small waterfall near Otiria Marae in Moerewa.