This is a responsive government- in minutes things started working https://t.co/Vih78MdOkt — nidhi bahuguna (@vinirish) 1538903182000

#6ETravelAdvisory: For assistance, contact us on Twitter/Facebook or chat with us at https://t.co/Mj1tYZIvoE. You m… https://t.co/3bW4JGfn5h — IndiGo (@IndiGo6E) 1538903781000

NEW DELHI: There were long queues at check-in counters across Indian airports on Sunday afternoon as the system of IndiGo — which accounts for 41% of domestic air traffic — went on the blink for over 90 minutes. The problem was encountered across all airports on IndiGo network. It was finally resolved around 5pm.The system glitch started at 12.35pm that crippled the airline's check-in process - issuing boarding passes and check-in baggage tags. This led to formation of long queues across airports.As angry passengers took to social media to register their complaints with the active-on-Twitter aviation minister Suresh Prabhu and his deputy Jayant Sinha , the airline tweeted: “Our systems were down at all the airports for a while. We are expecting the counters to be crowded more than usual. Seek your patience and cooperation.”Nidhi Bahuguna, a passenger tweeted from her handle @vinirish, “servers at airport down -Lucknow airport scene- flight is at 14.40 still long lines just for boarding pass”.Responding to her, Prabhu tagged Airports Authority of India (AAI) and DGCA saying: “Immediately look into this, @AAI_Official and #DGCA act on it ASAP to avoid any inconvenience to passengers.”On Sunday evening, IndiGo said in a statement: “We regret the inconvenience caused to our passengers this afternoon due to system being down across airports for around ninety minutes. Our flights and check-in systems are operating normally now.”Security agencies, as of now, do not suspect any foul play or cyber attack in Sunday's system crash. "The airline has told us it was a technical glitch," said a senior security official.The failure of IndiGo check-in system had significant impact as the airline operates over 1,000 daily flights and handles almost 50 lakh domestic passengers in a month.