A swimming gala was held by the Hong Kong Amateur Swimming Association at Tsim Sha Tsui Kowloon Park Swimming Pool. At around 11.00am, the teenager Cheuk Long Yi collapsed at poolside after finishing the 50m freestyle swimming tournament. Lifeguards performed CPR with automated external defibrillator (AED) immediately. She was soon hospitalized and remained in critical condition. Police is still carrying out investigation.