At least 10 people were killed after a Superking air craft of Border Security Force of India crashed near Delhi airport on Tuesday, officials said. The Ranchi-bound aircraft crashed soon after it took off from the airport. The BSF charter plane was carrying technicians on way to repair a helicopter in Naxal-hit Jharkhand. The crash killed six technicians, one engineer and one crew member and pilots. Times of India reported quoting sources in the aviation ministry the crash happened around 9.50am when the plane hit the airport boundary wall and landed in a sewage treatment plant while returning due to apparent technical problem five minutes after it took off. The aircraft lost contact with the Air Traffic Control at 9.50am, they said. Witnesses said the plane burst into flames after hitting the wall and then crashed into a water body. "We saw a plane spiralling down which crashed near the wall where work was going on. I could spot one body. A labourer who was working was also injured," a witness at the village told reporters. Home minister Rajnath Singh has briefed Prime Minister Narendra Modi about the crash. "Pained by the loss of life in the BSF plane crash. My thoughts are with the family of the deceased," Modi tweeted. The civil aviation ministry has ordered an inquiry into the crash.