The Centre for Health Protection is investigating two suspected food poisoning cases involving 23 people, aged 20 to 70.

Five men and eight women, aged 20 to 70, developed abdominal pain, diarrhoea, vomiting and fever after eating at a Wan Chai restaurant June 16.

Nine consulted private doctors while two attended hospitals.

Three men and seven women, aged 21 to 42, developed gastroenteritis symptoms after eating on a yacht June 21.

Three sought treatment from hospitals while three consulted private doctors.