MUMBAI: Unidentified parachute-like objects were spotted in the Mumbai airport airspace here, raising security concern.According to airport police, five unidentified objects were spotted over the airport area on Saturday evening by a pilot of Jet Airways just before take-off.He immediately alerted the Mumbai airport's Air Traffic Controller about the incident, airport police said.The authorities of the Mumbai International Airport Limited MIAL ) were also informed about the objects spotted over the airport.MIAL immediately alerted the airport police station, a MIAL official told PTI.The matter has also been brought to the notice of Mumbai's Joint Commissioner of Police (Law and Order) Deven Bharti.The police, however, is yet to register a case since no complaint has been received."Since no one has filed a complaint with us, we have not registered any case as of now," said DCP, Zone 8, Virendra Mishra.