In an unfortunate incident, two people have died and two others have been injured in a toxic gas leakage in sewage treatment plant on board INS Vikramaditya on Friday.Shipwright Artificer Rakesh Kumar and Mohandas Kolambkar, an employee of M/s Royal Marine has succumbed due to gas inhalation as per information provided by Indian Navy.According to reports, the incident took place around 5.00 PM at the Karwar naval base at Karnataka. Four persons including two civilians were busy in maintenance job in the sewage treatment plant, when they inhaled toxic fumes. They were immediately rushed to the naval hospital. INS Vikramaditya is India’s largest aircraft carrier.<!– /11440465/Dna_Article_Middle_300x250_BTF –>In this calendar year, this is the third incident pertaining to the Indian Navy, the previous two being fire on soon-to-be decommissioned aircraft carrier INS Viraat which resulted in the death of a Chief Engineer Mechanic and the injury of three others in March.Prior to it was in April when a sailor lost his leg while two others were injured in an oxygen cylinder explosion on board INS Nireekshak. The ship was on it way to Mumbai from Visakhapatnam.With inputs from Ateeq Shaikh.