Brisbane mother, Danica Bennet, shared two images a small metal blade in the yoghurt coated sultanas and shared to Facebook yesterday.
She said her daughter found the blade inside the box and was not injured.
Sunbeam Foods said that they were 'deeply concerned' by the discovery and assured that there was 'active monitoring of this situation.'
"We are confident that this has occurred outside the production process and are working with our value customers on the matter," they said in a statement to 9 News.