Nearly 65 people out of the total 120, who were admitted in various hospitals after inhaling chlorine gas which leaked from a cylinder near the Bombay Port Trust, have been discharged. The police had on Wednesday night filed an FIR against unidentified persons in connection with the gas leak under various sections of the Indian Penal Code and the Environment Protection Act.At least 120 people were admitted in King Edward Memorial hospital, JJ, Bombay Port Trust Hospital.