The families of the three Hamilton house fire victims are "horrified" that gatherings intended to pay respects to their loved ones have turned violent.
Police are urging mourners curb violent and drunken behaviour which has marred several memorial gatherings for the trio this week.
The call comes as the funeral for the first victim, Jake Hayes, 19, gets underway on the outskirts of Hamilton this afternoon.
The funerals for the other two victims of last Saturday's blaze, Toni Maree Johnston, 23, and Connor Swetman, 17, will take place tomorrow.
Hamilton Police acting city area commander, Inspector Marcus Lynam, said at least seven youths had been arrested at several incidents at vigils in the city in recent nights.