Sweden's National Food Agency (Livsmedelsverket) had found that Halal-labelled salami for sale in Sweden contained over 10 percent pork, which observant Muslims do not eat. It said the pork meat came from Slovenia.
"It is unacceptable that products that are labelled Halal contain pork meat," agency spokeswoman Louise Nyholm said in a statement after the agency tested 99 food products for pork DNA and found that nine tested positive.
Eight of the samples contained less than one percent pork and of those seven had less than 0.1 percent.
"There are a lot of people who absolutely do not want to eat pork meat, so it's important that companies take responsibility and verify that their products are not sold on false grounds," Nyholm said.
After the Food Agency's findings Slovenian food producer TMI kosaki presumed that the Austrian company Krainer was responsible for any pork ending up in the salami aimed at Muslim consumers.
However, the company owner Franz Krainer dismissed the accusations and said that all material used to produce the salami had come from the Slovenian company in frozen blocks.
Observant Muslims avoid pork as its consumption is prohibited by Islam.
The Islamic Halal method of killing an animal also requires its throat to be slit and the blood to be drained. The method is forbidden in Sweden because the animals are not anesthetize before slaughter.