A businessman has doubled the reward offered for new information on the deaths of twins Chris and Cru Kahui to $50,000 to try and break what he calls a stalemate in the case.
The three-month-old boys died in Starship Children's Hospital in Auckland in June 2006 after being admitted five days earlier with brain injuries.
Their father, Chris Kahui, was charged with their murders but was found not guilty in May 2008.
Michael Jacomb, of Upper Hutt, is adding $25,000 to reward money offered by lobby group Family First in February this year.
Mr Jacomb says he is disturbed that what he calls "a wall of silence" still exists around Kahui family members, but believes the new sum might be enough to crack the wall.
"They're not as tight as one may think and if they get a little bit desperate, $50,000 may well help. And if I can be part of that, I'll be well pleased."
Mr Jacomb says there is a time limit of three months to claim his reward.
