No confirmation has come from the airlines or the government.Although, as Campbell was leaving, after meeting thesenior officials of MoCA and DGCA, he said, "We were just giving an update on the status of the investigation...It is up to him (MoCA Minister) to give an update. The sample has been sent to a designated laboratory for confirmatory testing, with the final report awaited, the aviation ministry said. Both pilots of the August 4 Air India flight have been taken off flying duty pending the investigation.The AI 2379 flight was carrying 145 people from Phuket to Delhi when it suddenly lost altitude, injuring passengers and crew. The aircraft landed safely in Delhi, but 17 people were hospitalised.The AAIB probe is examining both possible mechanical issues and pilot behaviour. Investigators are also expected to analyse the aircraft's flight data and cockpit voice recorders to establish the sequence of events.