The World Health Organization said today that authorities are looking into whether the people were sickened by something they ate or were exposed to a chemical or bacteria.
Five others remain hospitalised in Sinoe County, about400 kilometres outside the capital, after complaining of abdominal pains. Two are critically ill.
The cases over the past week have evoked painful memories in Liberia, where more than 4,800 people died during the Ebola epidemic.
Those who fell sick this week all had attended a relative's funeral. That was how many Ebola victims contracted the disease when they came in contact with victims' corpses.