Three people died and five others were sickened over the weekend after a Thanksgiving dinner at the American Legion Hall in Antioch, according to county health officials.

Eight people were treated at Sutter Delta hospital between Friday and Saturday, county officials said. It is not yet known if it is an outbreak of a foodborne illness. All the victims reportedly live together, officials said.

Sutter Delta Medical Center in Antioch confirmed they received eight patients with probable foodborne symptoms. Three patients died, four patients were treated and released and one patient remains hospitalized, officials said.

Contra Costa County Public Health Department is investigating the cause and does not believe there is any risk to the general public.