World Vision says no New Zealand aid money has been lost due to fraud in Liberia.
More than $US1 million worth of aid to Liberia has been stolen.
A former senior World Vision official in Liberia and two others have been charged.
They are accused of selling the food in local markets and keeping the profits. They are also accused of using construction materials to build themselves multiple homes.
The thefts reportedly began in 2005. World Vision is said to have received an anonymous tip-off about the fraud in early 2007. Auditors were sent to 258 Liberian towns believed to be benefitting from the programme.
Mr Ward told the BBC that they could only establish that 9% of the food aid had reached the intended recipients. The Associated Press reports that 34 of the towns do not exist.
World Vision says it's confident the case does not involve donations from New Zealanders.
