Seattle & King County is investigating an outbreak of gastroenteritis with nausea, vomiting and diarrhea associated with two vendor locations: Mayuri Foods & Video at 2560 152nd Ave NE, Redmond, WA and Mayuri Indian Cuisine at 2115 Bel-Red Road also in Redmond, according to a statement from the health department.

The agency says twelve people from a single party became ill after eating food from the vendors on October 30th. The department learned of the outbreak on November 1st.

“We do not have laboratory confirmation of the etiology, but symptoms are suggestive of norovirus,” said the statement. “Often in norovirus outbreaks no laboratory testing is done. Food came from both vendors, but the exact food item that caused the illnesses has not been identified. It is not uncommon for outbreaks of norovirus to have multiple food items contaminated.”

The department said both vendors are working cooperatively with Public Health.

An inspection of Mayuri Foods & Video identified several factors that could have contributed to the outbreak, including failure to wash hands, inadequate hand washing facilities, and inadequate sanitizing of dishes.

“We have suspended Mayuri Foods & Video’s permit as of 11/3/16 so that they may correct these issues and allow time for thorough cleaning and sanitizing,” said the statement from the health agency.

Mayuri Indian Cuisine was also closed to allow the restaurant time for thorough cleaning and sanitizing, “Even though we did not identify any contributing factors at the time of our visit.” said the department’s statement.