NEW DELHI: A Singapore-bound Air India flight carrying around 190 passengers returned to Delhi early Thursday after the aircraft developed a technical issue mid-air.According to PTI, the Boeing 787-9 Dreamliner, operating flight AI 2380, received an Auxiliary Power Unit (APU) fire warning after take-off, prompting the crew to turn back. The aircraft had been airborne for about an hour before it landed safely at the national capital.Confirming the incident, an Air India spokesperson said the operating crew decided to carry out a precautionary return to Delhi shortly after take-off due to a suspected technical issue.“The aircraft landed safely in Delhi. Our ground teams at Delhi extended all necessary assistance to passengers and the flight departed for Singapore on an alternative aircraft,” the spokesperson said in a statement. The spokesperson also regretted the inconvenience caused to passengers due to the unforeseen situation.Flight tracking data from Flightradar24 showed that the aircraft took off late and landed back in Delhi at around 1 am on Thursday. Passengers were later flown to Singapore on another aircraft.