16-year-old boy suffers broken jaw, concussion in attack by 20 teenagers near Henley Rugby Club, Oxfordshire on April 13.

16-year-old boy suffers broken jaw, concussion in attack by 20 teenagers, aged 15-17, near Henley Rugby Club and River Thames, Oxfordshire on April 13. Attackers wore balaclavas or hoods; no arrests made. Thames Valley Police investigating; witnesses can contact 101 or CrimeStoppers anonymously.