Three people were killed, and some others were injured after a gas tank of a truck exploded at a CNG station in outer Delhi’s Tikri Kalan on Wednesday, prompting police to call a team from Indraprastha Gas Limited (IGL) for an inspection. The Delhi Fire Service said it received a call about the incident at 3:37pm, following which six fire tenders were rushed to the spot. (ANI/HT) The three victims were staffers at the CNG station, and one of them was filling the gas tank when it exploded. ALSO READ | Child among 9 dead as massive fire breaks out at Kolkata hotel The truck’s driver and others standing nearby were minorly injured in the incident, authorities said. The Delhi Fire Service said it received a call about the incident at 3:37pm, following which six fire tenders were rushed to the spot. The injured persons were rushed to the hospital, where they are currently under medical care, a fire service officer was cited by news agency PTI. What caused the blast? While the exact cause …