Arsenal says chairman Peter Hill-Wood has had a heart attack and is in a hospital receiving treatment.
The club said Sunday in a statement that the 76-year-old Hill-Wood suffered the attack after a bout of pneumonia.
The statement says "Peter was taken ill at home on Friday and is currently being treated in hospital. He is making a good recovery."
Hill-Wood has been chairman of Arsenal since 1982. He is the third member of his family to serve in the role, following his father Denis (1962-82) and grandfather Samuel, who had separate stints at the club between 1929 and 1936 and from 1946 to 1949.