Investigations are underway to locate two children who were swept away by the tide while bathing at the Weligama sea park.
Police said a 21-year-old female and three other girls were involved in the accident this afternoon.
The 21-year-old and a 14-year-old teenager have managed to save themselves.
The two individuals have been admitted to the Matara General Hospital for treatment.
Police said the missing persons are a 12-year-old child and a 15-year-old teenager.
All individuals are residents of Muhudugamuwa, Weligama.