It was alleged that the gas composition in a cylinder was changed by both Litro and Laugfs companies in April 2021 to 50:50 of Butane and Propane, from Butane 80: Propane 20. Former Consumer Affairs Authority Executive Director Thushan Gunawardena had mentioned that he is confident that all these explosions were due to the change of gas composition. "...Given that Sri Lanka is a tropical country the composition of LP Gas should have a lower percentage of Propane and a higher percentage of Butane,” Gunawardena said. Read more here: https://tinyurl.com/muc83hsy. Sri Lanka has no official standard for liquid petroleum gas composition and no single office has responsibility for overseeing the sector, Consumer Affairs Minister Lasantha Alagiyawanna had told parliament. Read more here: https://tinyurl.com/2p833adk. Sri Lanka’s largest LP gas distributor, State-run Litro Gas Lanka Ltd has assured the public that no changes were made to its LP gas composition and noted that it has been using the same composition for a long time: “An independent international lab report is provided before the LPG is loaded onto the ship for import. We also receive a separate lab report once the LPG ship reaches our terminal.” Read more here: https://tinyurl.com/yckjvjx8. Litro claimed that their own investigations into the matter have revealed that substandard regulators, clip-on valves and tubes had caused the explosions. Read more here: https://tinyurl.com/yjcbyfhe. On the 1st of December, President Gotabaya Rajapaksa appointed a committee to investigate the incidents and provide a report within two weeks following police and media reports of 14 explosions in a single day. Read more here: https://tinyurl.com/2p8934kw.