As of Thursday, 89 people have reported illnesses connected with a salmonella outbreak at a restaurant in Bentonville, Arkansas, reports NWANews.

The Arkansas Department of Health and Human Services, Division of Health, is investigating an outbreak of salmonellosis, according to a news release sent out Thursday. There is a link to Sushi King Restaurant, according to the release. The restaurant has voluntarily closed its doors.

Upon first learning of the outbreak, the Health Department initiated an investigation of potentially ill workers and the public and worked with the restaurant to determine the source of contamination.

Several families are planning to file a lawsuit against Sushi King for the alleged salmonella poisoning.

Seattle-based law firm Marler Clark, which specializes in salmonella and food-poisoning lawsuits nationwide, has already been contacted by roughly 20 people, according to a spokesman for the firm.