California’s Napa County Health Department has not released any additional information on a Salmonella outbreak that’s been linked to one of the area’s pricy Japanese restaurants.

Dr. Karen Refucio, Napa County’s chief public health officer, told the local newspaper at least six cases of Salmonella-related illnesses have been confirmed in the county. All reported dining at Morimoto Napa on Main Street from Oct 10-12.

Morimoto, a high-end Japanese restaurant, Friday issued a statement saying it is “in full cooperation” with health officials and taking “all precautionary measures necessary to ensure food safety.”

The Napa County Health Department has yet to provide any further information about any investigation that might be underway. Any investigation that does occur is going to have to take on Morimoto’s raw bar and extensive cold menu.

Salmonella is a foodborne illnesses with incubation period running from 12 to 72 hours. Symptoms include diarrhea, fever, and abdominal cramps, lasting four to seven days.