Dozens of people attending a banquet at Bali Hai Restaurant on Shelter Island in San Diego harbor last week were reportedly sickened, and health officials have been busy trying to figure out the source.

The event on July 29, sponsored by the San Diego chapter of the Society of Professional Journalists, drew 170 people, and 55 of them became ill. A few went to the hospital and one was reportedly taken there Saturday by paramedics.

People who attended the banquet were being asked by officials with the San Diego County Department of Environmental Health to fill out a questionnaire about what they had eaten prior to becoming ill.

The restaurant serves Polynesian cuisine and is a popular wedding and banquet venue.