Eleven of 59 soy bean and corn-processed products subject to a government investigation were found to contain ingredients with genetically modified organisms, according to the farm ministry.

One of the products -- a cornmeal used to make bread and cakes -- breaches the Japan Agricultural Standards Law because its label does not feature a warning over the product's levels of genetically modified organisms, according to the Ministry of Agriculture, Forestry and Fisheries.

According to the product's label, the cornmeal contains no GMO ingredients.

In terms of weight, however, it was found that some 6 percent of its ingredients are genetically modified, the ministry said.

If a food's GMO content is more than 5 percent, manufacturers are required to display this fact on food labels.

Although the product has passed safety tests, the manufacturer has voluntarily taken it off the market, the ministry said.

The other 10 goods found to contain GMO ingredients included cornmeal, tofu and fried tofu products, according to the ministry.

Of the latter, the cornmeal's GMO level is no more than 5 percent while the ministry was unable to calculate the precooked GMO level of the soy beans used in the tofu and fried tofu products, it said.