According to Rick Kupchella's Bring Me The News, there has been a potential norovirus outbreak at a nearby restaurant.  

It wasn't that long ago that I wrote about another outbreak at a Old Country Buffet in Maple Grove.  That happened to be an issue of unsanitary practices within the restaraunt.  This potential outbreak is believed to be from another patron of the business that came in and spread it.  Although that is the most likely scenario the Health Department is investigating the restaurant to make sure.

Read more about this at Rick Kupchella's Bring Me The News