In December 2014, a parliamentary committee presented its report, after investigating why a high-quality assault rifle was not being produced. In 2015, a public interest litigation (PIL) was filed in the Delhi High Court by a retired lieutenant colonel. He claimed that the lack of a modern rifle was causing soldiers to lose their lives. In April 2015, the Court asked the Ministry of Defence to file its response. The Ministry defended the use of the rifle, saying that casualties cannot be blamed on the weapon as it was inducted after thorough trials and had undergone three major upgrades since. They also pointed out the rifle had been not blamed by the Court of Inquires which had investigated the Naxalite operations. In November 2015, the Court dismissed the petition stating that there was not enough evidence to show any defects in the INSAS. It also noted the government was in the process of acquiring new rifles.