In a step towards solving the mystery over the missing Indian Air Force plane AN-32, a ocean monitoring vessel of the Chennai-based National Institute of Ocean Technology (NIOT) has recorded some metal reflections from deep within the sea, east of Chennai. The reflections have not yet been confirmed of being the missing aircraft. The NIOT vessel had sent submersibles (small vehicles designed to operate underwater) into the seas at a depth of around 2,000 metres at six places. A further confirmation about the debris would be known once the submersibles reach 3,000 metres below the sea by the end of this month.