He urged mourners to stay calm and respect what the families wanted - even if they wanted to help and follow usual protocol.
According to the New Zealand Muslim Association - traditionally, only men are allowed to be present at the burial, though in some communities all mourners, including women, will be allowed at the gravesite.
Police Deputy Commissioner Wally Haumaha is in attendance.
Meanwhile, police have formally released the first five names of those killed at the Masjid Al Noor Mosque shootings.