Japanese pharmaceutical group Kobayashi Pharmaceutical has announced two new deaths potentially linked to some of its supplements. This brings to four the number of deaths in Japan suspected to have been caused by dietary supplements made from a type of yeast-fermented rice called “beni koji,” or red yeast rice.

More than a hundred cases of hospitalizations in Japan, potentially also linked to these food supplements, are also being investigated. The company last week launched a vast recall of its suspect products.